Finding the Fourth Proportional to 71,805.70, 107,708.55 and 40,701.70
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Solution
The fourth proportional to 71,805.70, 107,708.55 and 40,701.70 is: 61,052.55
Step by Step Solution
- Step 1: Write the proportion equation
71,805.70 : 107,708.55 = 40,701.70 : x - Step 2: Convert to fraction form
71,805.70/107,708.55 = 40,701.70/x - Step 3: Cross multiply
71,805.70x = 107,708.55 × 40,701.70 - Step 4: Simplify right side
71,805.70x = 4,383,921,089.54 - Step 5: Solve for x
x = 4,383,921,089.54/71,805.70 - Step 6: Final answer
x = 61,052.55
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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.