Home / 70,972.20-106,463.16-18,387

Finding the Fourth Proportional to 70,972.20, 106,463.16 and 18,387

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Solution

The fourth proportional to 70,972.20, 106,463.16 and 18,387 is: 27,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,972.20 : 106,463.16 = 18,387 : x
  2. Step 2: Convert to fraction form
    70,972.20/106,463.16 = 18,387/x
  3. Step 3: Cross multiply
    70,972.20x = 106,463.16 × 18,387
  4. Step 4: Simplify right side
    70,972.20x = 1,957,538,122.92
  5. Step 5: Solve for x
    x = 1,957,538,122.92/70,972.20
  6. Step 6: Final answer
    x = 27,581.76

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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.