Home / 87,855.33-131,781.82-21,296.04

Finding the Fourth Proportional to 87,855.33, 131,781.82 and 21,296.04

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Solution

The fourth proportional to 87,855.33, 131,781.82 and 21,296.04 is: 31,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.33 : 131,781.82 = 21,296.04 : x
  2. Step 2: Convert to fraction form
    87,855.33/131,781.82 = 21,296.04/x
  3. Step 3: Cross multiply
    87,855.33x = 131,781.82 × 21,296.04
  4. Step 4: Simplify right side
    87,855.33x = 2,806,430,909.99
  5. Step 5: Solve for x
    x = 2,806,430,909.99/87,855.33
  6. Step 6: Final answer
    x = 31,943.78

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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.