Home / 87,821.33-131,732.33-21,261.35

Finding the Fourth Proportional to 87,821.33, 131,732.33 and 21,261.35

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Solution

The fourth proportional to 87,821.33, 131,732.33 and 21,261.35 is: 31,892.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.33 : 131,732.33 = 21,261.35 : x
  2. Step 2: Convert to fraction form
    87,821.33/131,732.33 = 21,261.35/x
  3. Step 3: Cross multiply
    87,821.33x = 131,732.33 × 21,261.35
  4. Step 4: Simplify right side
    87,821.33x = 2,800,807,397.47
  5. Step 5: Solve for x
    x = 2,800,807,397.47/87,821.33
  6. Step 6: Final answer
    x = 31,892.11

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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.