Finding the Fourth Proportional to 75,136.32, 112,688.16 and 22,531.68
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Solution
The fourth proportional to 75,136.32, 112,688.16 and 22,531.68 is: 33,792.63
Step by Step Solution
- Step 1: Write the proportion equation
75,136.32 : 112,688.16 = 22,531.68 : x - Step 2: Convert to fraction form
75,136.32/112,688.16 = 22,531.68/x - Step 3: Cross multiply
75,136.32x = 112,688.16 × 22,531.68 - Step 4: Simplify right side
75,136.32x = 2,539,053,560.91 - Step 5: Solve for x
x = 2,539,053,560.91/75,136.32 - Step 6: Final answer
x = 33,792.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.