Finding the Fourth Proportional to 71,029.13, 106,543.89 and 18,439.07
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Solution
The fourth proportional to 71,029.13, 106,543.89 and 18,439.07 is: 27,658.65
Step by Step Solution
- Step 1: Write the proportion equation
71,029.13 : 106,543.89 = 18,439.07 : x - Step 2: Convert to fraction form
71,029.13/106,543.89 = 18,439.07/x - Step 3: Cross multiply
71,029.13x = 106,543.89 × 18,439.07 - Step 4: Simplify right side
71,029.13x = 1,964,569,713.06 - Step 5: Solve for x
x = 1,964,569,713.06/71,029.13 - Step 6: Final answer
x = 27,658.65
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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.