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Finding the Fourth Proportional to 71,324.70, 106,987.05 and 43,331.10

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Solution

The fourth proportional to 71,324.70, 106,987.05 and 43,331.10 is: 64,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,324.70 : 106,987.05 = 43,331.10 : x
  2. Step 2: Convert to fraction form
    71,324.70/106,987.05 = 43,331.10/x
  3. Step 3: Cross multiply
    71,324.70x = 106,987.05 × 43,331.10
  4. Step 4: Simplify right side
    71,324.70x = 4,635,866,562.26
  5. Step 5: Solve for x
    x = 4,635,866,562.26/71,324.70
  6. Step 6: Final answer
    x = 64,996.65

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Similar ratio
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1.5x scale

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.