Home / 87,854.82-131,781.06-21,295.55

Finding the Fourth Proportional to 87,854.82, 131,781.06 and 21,295.55

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Solution

The fourth proportional to 87,854.82, 131,781.06 and 21,295.55 is: 31,943.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.82 : 131,781.06 = 21,295.55 : x
  2. Step 2: Convert to fraction form
    87,854.82/131,781.06 = 21,295.55/x
  3. Step 3: Cross multiply
    87,854.82x = 131,781.06 × 21,295.55
  4. Step 4: Simplify right side
    87,854.82x = 2,806,349,493.38
  5. Step 5: Solve for x
    x = 2,806,349,493.38/87,854.82
  6. Step 6: Final answer
    x = 31,943.03

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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.