Finding the Fourth Proportional to 71,381.79, 107,073.43 and 29,251.06
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Solution
The fourth proportional to 71,381.79, 107,073.43 and 29,251.06 is: 43,876.89
Step by Step Solution
- Step 1: Write the proportion equation
71,381.79 : 107,073.43 = 29,251.06 : x - Step 2: Convert to fraction form
71,381.79/107,073.43 = 29,251.06/x - Step 3: Cross multiply
71,381.79x = 107,073.43 × 29,251.06 - Step 4: Simplify right side
71,381.79x = 3,132,010,984.52 - Step 5: Solve for x
x = 3,132,010,984.52/71,381.79 - Step 6: Final answer
x = 43,876.89
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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.