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Finding the Fourth Proportional to 87,887.88, 121,292.78 and 49,654.49

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Solution

The fourth proportional to 87,887.88, 121,292.78 and 49,654.49 is: 68,527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,887.88 : 121,292.78 = 49,654.49 : x
  2. Step 2: Convert to fraction form
    87,887.88/121,292.78 = 49,654.49/x
  3. Step 3: Cross multiply
    87,887.88x = 121,292.78 × 49,654.49
  4. Step 4: Simplify right side
    87,887.88x = 6,022,730,276.85
  5. Step 5: Solve for x
    x = 6,022,730,276.85/87,887.88
  6. Step 6: Final answer
    x = 68,527.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.