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Finding the Fourth Proportional to 87,179.80, 130,644.94 and 49,662.46

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Solution

The fourth proportional to 87,179.80, 130,644.94 and 49,662.46 is: 74,422.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,179.80 : 130,644.94 = 49,662.46 : x
  2. Step 2: Convert to fraction form
    87,179.80/130,644.94 = 49,662.46/x
  3. Step 3: Cross multiply
    87,179.80x = 130,644.94 × 49,662.46
  4. Step 4: Simplify right side
    87,179.80x = 6,488,149,106.95
  5. Step 5: Solve for x
    x = 6,488,149,106.95/87,179.80
  6. Step 6: Final answer
    x = 74,422.62

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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.