Finding the Fourth Proportional to 88,160.64, 121,672.80 and 54,631.68
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Solution
The fourth proportional to 88,160.64, 121,672.80 and 54,631.68 is: 75,398.61
Step by Step Solution
- Step 1: Write the proportion equation
88,160.64 : 121,672.80 = 54,631.68 : x - Step 2: Convert to fraction form
88,160.64/121,672.80 = 54,631.68/x - Step 3: Cross multiply
88,160.64x = 121,672.80 × 54,631.68 - Step 4: Simplify right side
88,160.64x = 6,647,189,474.30 - Step 5: Solve for x
x = 6,647,189,474.30/88,160.64 - Step 6: Final answer
x = 75,398.61
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.