Home / 87,277.28-120,434-49,551.20

Finding the Fourth Proportional to 87,277.28, 120,434 and 49,551.20

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Solution

The fourth proportional to 87,277.28, 120,434 and 49,551.20 is: 68,375.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,277.28 : 120,434 = 49,551.20 : x
  2. Step 2: Convert to fraction form
    87,277.28/120,434 = 49,551.20/x
  3. Step 3: Cross multiply
    87,277.28x = 120,434 × 49,551.20
  4. Step 4: Simplify right side
    87,277.28x = 5,967,649,220.80
  5. Step 5: Solve for x
    x = 5,967,649,220.80/87,277.28
  6. Step 6: Final answer
    x = 68,375.75

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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.