Finding the Fourth Proportional to 86,354.42, 129,549.08 and 36,434.63
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Solution
The fourth proportional to 86,354.42, 129,549.08 and 36,434.63 is: 54,659.32
Step by Step Solution
- Step 1: Write the proportion equation
86,354.42 : 129,549.08 = 36,434.63 : x - Step 2: Convert to fraction form
86,354.42/129,549.08 = 36,434.63/x - Step 3: Cross multiply
86,354.42x = 129,549.08 × 36,434.63 - Step 4: Simplify right side
86,354.42x = 4,720,073,211.60 - Step 5: Solve for x
x = 4,720,073,211.60/86,354.42 - Step 6: Final answer
x = 54,659.32
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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.