Home / 87,538.72-120,791.28-49,291.84

Finding the Fourth Proportional to 87,538.72, 120,791.28 and 49,291.84

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Solution

The fourth proportional to 87,538.72, 120,791.28 and 49,291.84 is: 68,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,538.72 : 120,791.28 = 49,291.84 : x
  2. Step 2: Convert to fraction form
    87,538.72/120,791.28 = 49,291.84/x
  3. Step 3: Cross multiply
    87,538.72x = 120,791.28 × 49,291.84
  4. Step 4: Simplify right side
    87,538.72x = 5,954,024,447.16
  5. Step 5: Solve for x
    x = 5,954,024,447.16/87,538.72
  6. Step 6: Final answer
    x = 68,015.90

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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.