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Finding the Fourth Proportional to 87,588.80, 120,872.66 and 49,863

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Solution

The fourth proportional to 87,588.80, 120,872.66 and 49,863 is: 68,811.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,588.80 : 120,872.66 = 49,863 : x
  2. Step 2: Convert to fraction form
    87,588.80/120,872.66 = 49,863/x
  3. Step 3: Cross multiply
    87,588.80x = 120,872.66 × 49,863
  4. Step 4: Simplify right side
    87,588.80x = 6,027,073,445.58
  5. Step 5: Solve for x
    x = 6,027,073,445.58/87,588.80
  6. Step 6: Final answer
    x = 68,811.01

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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.