Home / 87,972.38-131,956.68-21,412.88

Finding the Fourth Proportional to 87,972.38, 131,956.68 and 21,412.88

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Solution

The fourth proportional to 87,972.38, 131,956.68 and 21,412.88 is: 32,118.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,972.38 : 131,956.68 = 21,412.88 : x
  2. Step 2: Convert to fraction form
    87,972.38/131,956.68 = 21,412.88/x
  3. Step 3: Cross multiply
    87,972.38x = 131,956.68 × 21,412.88
  4. Step 4: Simplify right side
    87,972.38x = 2,825,572,554.04
  5. Step 5: Solve for x
    x = 2,825,572,554.04/87,972.38
  6. Step 6: Final answer
    x = 32,118.86

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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.