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Finding the Fourth Proportional to 87,655, 131,482.50 and 29,287

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Solution

The fourth proportional to 87,655, 131,482.50 and 29,287 is: 43,930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,655 : 131,482.50 = 29,287 : x
  2. Step 2: Convert to fraction form
    87,655/131,482.50 = 29,287/x
  3. Step 3: Cross multiply
    87,655x = 131,482.50 × 29,287
  4. Step 4: Simplify right side
    87,655x = 3,850,727,977.50
  5. Step 5: Solve for x
    x = 3,850,727,977.50/87,655
  6. Step 6: Final answer
    x = 43,930.50

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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.