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Finding the Fourth Proportional to 87,757.83, 121,105.80 and 49,525.47

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Solution

The fourth proportional to 87,757.83, 121,105.80 and 49,525.47 is: 68,345.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,757.83 : 121,105.80 = 49,525.47 : x
  2. Step 2: Convert to fraction form
    87,757.83/121,105.80 = 49,525.47/x
  3. Step 3: Cross multiply
    87,757.83x = 121,105.80 × 49,525.47
  4. Step 4: Simplify right side
    87,757.83x = 5,997,821,664.73
  5. Step 5: Solve for x
    x = 5,997,821,664.73/87,757.83
  6. Step 6: Final answer
    x = 68,345.15

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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.