Home / 82,517.60-123,756.54-38,101.66

Finding the Fourth Proportional to 82,517.60, 123,756.54 and 38,101.66

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Solution

The fourth proportional to 82,517.60, 123,756.54 and 38,101.66 is: 57,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,517.60 : 123,756.54 = 38,101.66 : x
  2. Step 2: Convert to fraction form
    82,517.60/123,756.54 = 38,101.66/x
  3. Step 3: Cross multiply
    82,517.60x = 123,756.54 × 38,101.66
  4. Step 4: Simplify right side
    82,517.60x = 4,715,329,609.86
  5. Step 5: Solve for x
    x = 4,715,329,609.86/82,517.60
  6. Step 6: Final answer
    x = 57,143.32

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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.