i think i have completed everything but i only have 46 balloons. should i have be 50, because when i try to do the final race in future fun land verses wiz pig, it says, "you have to get every balloon and complete the future fun land trophy" but i am pretty sure i already have.

There are 47 golden balloons in the game, let's see: there are 5 area's with 4 levels which you race 2 times (40 balloons) there are a few extra balloons: in the sand at the beach you can draw a balloon to get 1
you can get the ice block in the water, in the snow area
and there are a few challenges: test drive for car/hovercraft/plane and a token race for the plane AND you can be challenged to blow out some torches, but without this one you can't be challenged for the token race. I hope this helps