Finding the Fourth Proportional to 86,445.43, 129,668.14 and 27,322.62
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Solution
The fourth proportional to 86,445.43, 129,668.14 and 27,322.62 is: 40,983.92
Step by Step Solution
- Step 1: Write the proportion equation
86,445.43 : 129,668.14 = 27,322.62 : x - Step 2: Convert to fraction form
86,445.43/129,668.14 = 27,322.62/x - Step 3: Cross multiply
86,445.43x = 129,668.14 × 27,322.62 - Step 4: Simplify right side
86,445.43x = 3,542,872,863.22 - Step 5: Solve for x
x = 3,542,872,863.22/86,445.43 - Step 6: Final answer
x = 40,983.92
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Similar ratio
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1.5x scale
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.