Home / 87,115.52-120,212.64-49,395.84

Finding the Fourth Proportional to 87,115.52, 120,212.64 and 49,395.84

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Solution

The fourth proportional to 87,115.52, 120,212.64 and 49,395.84 is: 68,162.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,115.52 : 120,212.64 = 49,395.84 : x
  2. Step 2: Convert to fraction form
    87,115.52/120,212.64 = 49,395.84/x
  3. Step 3: Cross multiply
    87,115.52x = 120,212.64 × 49,395.84
  4. Step 4: Simplify right side
    87,115.52x = 5,938,004,331.42
  5. Step 5: Solve for x
    x = 5,938,004,331.42/87,115.52
  6. Step 6: Final answer
    x = 68,162.42

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1.5x scale

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.