Home / 87,424.53-120,645.45-49,698.78

Finding the Fourth Proportional to 87,424.53, 120,645.45 and 49,698.78

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Solution

The fourth proportional to 87,424.53, 120,645.45 and 49,698.78 is: 68,584.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,424.53 : 120,645.45 = 49,698.78 : x
  2. Step 2: Convert to fraction form
    87,424.53/120,645.45 = 49,698.78/x
  3. Step 3: Cross multiply
    87,424.53x = 120,645.45 × 49,698.78
  4. Step 4: Simplify right side
    87,424.53x = 5,995,931,677.55
  5. Step 5: Solve for x
    x = 5,995,931,677.55/87,424.53
  6. Step 6: Final answer
    x = 68,584.09

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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.