Coming off their bye week, the Bears flew to Lincoln Financial Field for a Week 9 Monday night duel with the Philadelphia Eagles. Chicago delivered the game's opening punch in the first quarter as quarterback Jay Cutler found tight end Matt Spaeth on a 5-yard touchdown pass.  The Bears added onto their lead in the second quarter with a 51-yard field goal from kicker Robbie Gould.  The Eagles would answer with kicker Alex Henery getting a 47-yard field goal, followed by linebacker Brian Rolle returned a fumble 22 yards for a touchdown, yet Chicago closed out the half with a 2-yard touchdown run from running back Marion Barber. Philadelphia took the lead in the third quarter with running back Ronnie Brown getting a 4-yard touchdown run, followed by running back LeSean McCoy getting a 33-yard touchdown run.  The Bears replied with a 38-yard field goal from Gould.  Afterwards, Chicago regained the lead in the fourth quarter with Cutler connecting with wide receiver Earl Bennett on a 5-yard touchdown pass. On the Eagles possession, punter Chas Henry attempted to pass to Colt Anderson on a fake punt, which fell short.Gould would then make a 22-yard field goal. The Eagles tried to rally, but the Bears defense would hold on for the victory.
Question: How many yards longer was the longest field goal when compared to the second longest field goal?
Answer: 4