Home / 87,579.90-120,863.61-49,354.65

Finding the Fourth Proportional to 87,579.90, 120,863.61 and 49,354.65

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Solution

The fourth proportional to 87,579.90, 120,863.61 and 49,354.65 is: 68,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,579.90 : 120,863.61 = 49,354.65 : x
  2. Step 2: Convert to fraction form
    87,579.90/120,863.61 = 49,354.65/x
  3. Step 3: Cross multiply
    87,579.90x = 120,863.61 × 49,354.65
  4. Step 4: Simplify right side
    87,579.90x = 5,965,181,169.29
  5. Step 5: Solve for x
    x = 5,965,181,169.29/87,579.90
  6. Step 6: Final answer
    x = 68,111.30

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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.