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Finding the Fourth Proportional to 87,900.62, 131,849.49 and 21,341.30

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Solution

The fourth proportional to 87,900.62, 131,849.49 and 21,341.30 is: 32,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,900.62 : 131,849.49 = 21,341.30 : x
  2. Step 2: Convert to fraction form
    87,900.62/131,849.49 = 21,341.30/x
  3. Step 3: Cross multiply
    87,900.62x = 131,849.49 × 21,341.30
  4. Step 4: Simplify right side
    87,900.62x = 2,813,839,520.94
  5. Step 5: Solve for x
    x = 2,813,839,520.94/87,900.62
  6. Step 6: Final answer
    x = 32,011.60

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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.