Home / 87,282.78-120,450.32-49,557.03

Finding the Fourth Proportional to 87,282.78, 120,450.32 and 49,557.03

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Solution

The fourth proportional to 87,282.78, 120,450.32 and 49,557.03 is: 68,388.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,282.78 : 120,450.32 = 49,557.03 : x
  2. Step 2: Convert to fraction form
    87,282.78/120,450.32 = 49,557.03/x
  3. Step 3: Cross multiply
    87,282.78x = 120,450.32 × 49,557.03
  4. Step 4: Simplify right side
    87,282.78x = 5,969,160,121.75
  5. Step 5: Solve for x
    x = 5,969,160,121.75/87,282.78
  6. Step 6: Final answer
    x = 68,388.75

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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.