Home / 87,940.82-131,910.08-21,380.76

Finding the Fourth Proportional to 87,940.82, 131,910.08 and 21,380.76

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Solution

The fourth proportional to 87,940.82, 131,910.08 and 21,380.76 is: 32,070.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,940.82 : 131,910.08 = 21,380.76 : x
  2. Step 2: Convert to fraction form
    87,940.82/131,910.08 = 21,380.76/x
  3. Step 3: Cross multiply
    87,940.82x = 131,910.08 × 21,380.76
  4. Step 4: Simplify right side
    87,940.82x = 2,820,337,655.16
  5. Step 5: Solve for x
    x = 2,820,337,655.16/87,940.82
  6. Step 6: Final answer
    x = 32,070.86

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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.