Finding the Fourth Proportional to 71,230.20, 106,805.81 and 29,139.85
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Solution
The fourth proportional to 71,230.20, 106,805.81 and 29,139.85 is: 43,693.62
Step by Step Solution
- Step 1: Write the proportion equation
71,230.20 : 106,805.81 = 29,139.85 : x - Step 2: Convert to fraction form
71,230.20/106,805.81 = 29,139.85/x - Step 3: Cross multiply
71,230.20x = 106,805.81 × 29,139.85 - Step 4: Simplify right side
71,230.20x = 3,112,305,386.44 - Step 5: Solve for x
x = 3,112,305,386.44/71,230.20 - Step 6: Final answer
x = 43,693.62
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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.