Finding the Fourth Proportional to 86,615.70, 129,635.55 and 62,855.70
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Solution
The fourth proportional to 86,615.70, 129,635.55 and 62,855.70 is: 94,074.55
Step by Step Solution
- Step 1: Write the proportion equation
86,615.70 : 129,635.55 = 62,855.70 : x - Step 2: Convert to fraction form
86,615.70/129,635.55 = 62,855.70/x - Step 3: Cross multiply
86,615.70x = 129,635.55 × 62,855.70 - Step 4: Simplify right side
86,615.70x = 8,148,333,240.14 - Step 5: Solve for x
x = 8,148,333,240.14/86,615.70 - Step 6: Final answer
x = 94,074.55
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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.