Home / 87,100.65-120,195.48-49,374.09

Finding the Fourth Proportional to 87,100.65, 120,195.48 and 49,374.09

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Solution

The fourth proportional to 87,100.65, 120,195.48 and 49,374.09 is: 68,134.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,100.65 : 120,195.48 = 49,374.09 : x
  2. Step 2: Convert to fraction form
    87,100.65/120,195.48 = 49,374.09/x
  3. Step 3: Cross multiply
    87,100.65x = 120,195.48 × 49,374.09
  4. Step 4: Simplify right side
    87,100.65x = 5,934,542,447.11
  5. Step 5: Solve for x
    x = 5,934,542,447.11/87,100.65
  6. Step 6: Final answer
    x = 68,134.31

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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.