Ratio 4:1sides-
BD:16 XZ:4
CD:8 YZ:2
area- 128:8 simplified- 16:1
If you triple the sides the new lenths would be..
BD:48 XZ:12
CD:24 YZ:6
The new ratio would be 12:3
The new area would be 4:1
The effect if you decreasethe ratio of the areas is the ratio of the area is triple the ratio of the sides!