Home / 87,158.48-120,275.16-49,431.92

Finding the Fourth Proportional to 87,158.48, 120,275.16 and 49,431.92

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Solution

The fourth proportional to 87,158.48, 120,275.16 and 49,431.92 is: 68,214.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,158.48 : 120,275.16 = 49,431.92 : x
  2. Step 2: Convert to fraction form
    87,158.48/120,275.16 = 49,431.92/x
  3. Step 3: Cross multiply
    87,158.48x = 120,275.16 × 49,431.92
  4. Step 4: Simplify right side
    87,158.48x = 5,945,432,087.11
  5. Step 5: Solve for x
    x = 5,945,432,087.11/87,158.48
  6. Step 6: Final answer
    x = 68,214.04

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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.