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Finding the Fourth Proportional to 87,671.68, 120,957.90 and 49,426.44

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Solution

The fourth proportional to 87,671.68, 120,957.90 and 49,426.44 is: 68,192.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,671.68 : 120,957.90 = 49,426.44 : x
  2. Step 2: Convert to fraction form
    87,671.68/120,957.90 = 49,426.44/x
  3. Step 3: Cross multiply
    87,671.68x = 120,957.90 × 49,426.44
  4. Step 4: Simplify right side
    87,671.68x = 5,978,518,386.88
  5. Step 5: Solve for x
    x = 5,978,518,386.88/87,671.68
  6. Step 6: Final answer
    x = 68,192.13

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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.