Home / 80,712.43-120,901.88-47,331.97

Finding the Fourth Proportional to 80,712.43, 120,901.88 and 47,331.97

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Solution

The fourth proportional to 80,712.43, 120,901.88 and 47,331.97 is: 70,900.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712.43 : 120,901.88 = 47,331.97 : x
  2. Step 2: Convert to fraction form
    80,712.43/120,901.88 = 47,331.97/x
  3. Step 3: Cross multiply
    80,712.43x = 120,901.88 × 47,331.97
  4. Step 4: Simplify right side
    80,712.43x = 5,722,523,315.93
  5. Step 5: Solve for x
    x = 5,722,523,315.93/80,712.43
  6. Step 6: Final answer
    x = 70,900.15

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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.