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Finding the Fourth Proportional to 87,893.32, 131,838.72 and 21,334

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Solution

The fourth proportional to 87,893.32, 131,838.72 and 21,334 is: 32,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,893.32 : 131,838.72 = 21,334 : x
  2. Step 2: Convert to fraction form
    87,893.32/131,838.72 = 21,334/x
  3. Step 3: Cross multiply
    87,893.32x = 131,838.72 × 21,334
  4. Step 4: Simplify right side
    87,893.32x = 2,812,647,252.48
  5. Step 5: Solve for x
    x = 2,812,647,252.48/87,893.32
  6. Step 6: Final answer
    x = 32,000.69

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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.