Home / 87,841.13-131,761.23-21,281.25

Finding the Fourth Proportional to 87,841.13, 131,761.23 and 21,281.25

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Solution

The fourth proportional to 87,841.13, 131,761.23 and 21,281.25 is: 31,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,841.13 : 131,761.23 = 21,281.25 : x
  2. Step 2: Convert to fraction form
    87,841.13/131,761.23 = 21,281.25/x
  3. Step 3: Cross multiply
    87,841.13x = 131,761.23 × 21,281.25
  4. Step 4: Simplify right side
    87,841.13x = 2,804,044,090.24
  5. Step 5: Solve for x
    x = 2,804,044,090.24/87,841.13
  6. Step 6: Final answer
    x = 31,921.77

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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.