Finding the Fourth Proportional to 79,706.13, 119,566.17 and 20,541.70
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Solution
The fourth proportional to 79,706.13, 119,566.17 and 20,541.70 is: 30,814.35
Step by Step Solution
- Step 1: Write the proportion equation
79,706.13 : 119,566.17 = 20,541.70 : x - Step 2: Convert to fraction form
79,706.13/119,566.17 = 20,541.70/x - Step 3: Cross multiply
79,706.13x = 119,566.17 × 20,541.70 - Step 4: Simplify right side
79,706.13x = 2,456,092,394.29 - Step 5: Solve for x
x = 2,456,092,394.29/79,706.13 - Step 6: Final answer
x = 30,814.35
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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.