Home / 87,682.13-121,013.19-49,449.54

Finding the Fourth Proportional to 87,682.13, 121,013.19 and 49,449.54

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Solution

The fourth proportional to 87,682.13, 121,013.19 and 49,449.54 is: 68,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682.13 : 121,013.19 = 49,449.54 : x
  2. Step 2: Convert to fraction form
    87,682.13/121,013.19 = 49,449.54/x
  3. Step 3: Cross multiply
    87,682.13x = 121,013.19 × 49,449.54
  4. Step 4: Simplify right side
    87,682.13x = 5,984,046,579.43
  5. Step 5: Solve for x
    x = 5,984,046,579.43/87,682.13
  6. Step 6: Final answer
    x = 68,247.05

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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.