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Finding the Fourth Proportional to 87,491.70, 120,737.18 and 49,251.17

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Solution

The fourth proportional to 87,491.70, 120,737.18 and 49,251.17 is: 67,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,491.70 : 120,737.18 = 49,251.17 : x
  2. Step 2: Convert to fraction form
    87,491.70/120,737.18 = 49,251.17/x
  3. Step 3: Cross multiply
    87,491.70x = 120,737.18 × 49,251.17
  4. Step 4: Simplify right side
    87,491.70x = 5,946,447,802.47
  5. Step 5: Solve for x
    x = 5,946,447,802.47/87,491.70
  6. Step 6: Final answer
    x = 67,965.85

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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.