Home / 71,789.14-99,065.13-39,517.47

Finding the Fourth Proportional to 71,789.14, 99,065.13 and 39,517.47

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Solution

The fourth proportional to 71,789.14, 99,065.13 and 39,517.47 is: 54,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,789.14 : 99,065.13 = 39,517.47 : x
  2. Step 2: Convert to fraction form
    71,789.14/99,065.13 = 39,517.47/x
  3. Step 3: Cross multiply
    71,789.14x = 99,065.13 × 39,517.47
  4. Step 4: Simplify right side
    71,789.14x = 3,914,803,154.63
  5. Step 5: Solve for x
    x = 3,914,803,154.63/71,789.14
  6. Step 6: Final answer
    x = 54,531.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.