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Finding the Fourth Proportional to 87,560, 120,828.68 and 49,319.88

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Solution

The fourth proportional to 87,560, 120,828.68 and 49,319.88 is: 68,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,560 : 120,828.68 = 49,319.88 : x
  2. Step 2: Convert to fraction form
    87,560/120,828.68 = 49,319.88/x
  3. Step 3: Cross multiply
    87,560x = 120,828.68 × 49,319.88
  4. Step 4: Simplify right side
    87,560x = 5,959,255,998.16
  5. Step 5: Solve for x
    x = 5,959,255,998.16/87,560
  6. Step 6: Final answer
    x = 68,059.11

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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.