Home / 87,972.39-131,956.73-21,412.89

Finding the Fourth Proportional to 87,972.39, 131,956.73 and 21,412.89

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Solution

The fourth proportional to 87,972.39, 131,956.73 and 21,412.89 is: 32,118.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,972.39 : 131,956.73 = 21,412.89 : x
  2. Step 2: Convert to fraction form
    87,972.39/131,956.73 = 21,412.89/x
  3. Step 3: Cross multiply
    87,972.39x = 131,956.73 × 21,412.89
  4. Step 4: Simplify right side
    87,972.39x = 2,825,574,944.25
  5. Step 5: Solve for x
    x = 2,825,574,944.25/87,972.39
  6. Step 6: Final answer
    x = 32,118.88

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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.