Home / 87,864.60-131,795.70-21,305.28

Finding the Fourth Proportional to 87,864.60, 131,795.70 and 21,305.28

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Solution

The fourth proportional to 87,864.60, 131,795.70 and 21,305.28 is: 31,957.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,864.60 : 131,795.70 = 21,305.28 : x
  2. Step 2: Convert to fraction form
    87,864.60/131,795.70 = 21,305.28/x
  3. Step 3: Cross multiply
    87,864.60x = 131,795.70 × 21,305.28
  4. Step 4: Simplify right side
    87,864.60x = 2,807,944,291.30
  5. Step 5: Solve for x
    x = 2,807,944,291.30/87,864.60
  6. Step 6: Final answer
    x = 31,957.63

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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.