Question about backing fabric
I dont know if Im having a problem understanding the amount of fabric required for backing fabric.
The quilt that Im working on is 61 1/2" x 74 1/2" finished dimensions. The pattern calls for 4 yards of backing fabric. So in working out how much fabric 4 yards actually is I found that 4 yards is way too much. 1 yard is 36 inches in length so 4 x 36" = 144" which is 1" shy of being double the length of fabric needed. If I buy 106" backing fabric I understand that I will have a surplus going across the width of the fabric and thats fair enough, but I really dont get the length thing at all.
Can anyone explain to this newbie why so much fabric is needed?
Fiona.