Home / 87,940.11-131,908.34-21,380.59

Finding the Fourth Proportional to 87,940.11, 131,908.34 and 21,380.59

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Solution

The fourth proportional to 87,940.11, 131,908.34 and 21,380.59 is: 32,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,940.11 : 131,908.34 = 21,380.59 : x
  2. Step 2: Convert to fraction form
    87,940.11/131,908.34 = 21,380.59/x
  3. Step 3: Cross multiply
    87,940.11x = 131,908.34 × 21,380.59
  4. Step 4: Simplify right side
    87,940.11x = 2,820,277,475.58
  5. Step 5: Solve for x
    x = 2,820,277,475.58/87,940.11
  6. Step 6: Final answer
    x = 32,070.43

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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.