Finding the Fourth Proportional to 71,252.24, 106,864.20 and 20,657.21
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Solution
The fourth proportional to 71,252.24, 106,864.20 and 20,657.21 is: 30,981.70
Step by Step Solution
- Step 1: Write the proportion equation
71,252.24 : 106,864.20 = 20,657.21 : x - Step 2: Convert to fraction form
71,252.24/106,864.20 = 20,657.21/x - Step 3: Cross multiply
71,252.24x = 106,864.20 × 20,657.21 - Step 4: Simplify right side
71,252.24x = 2,207,515,686.56 - Step 5: Solve for x
x = 2,207,515,686.56/71,252.24 - Step 6: Final answer
x = 30,981.70
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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.