Home / 87,665.26-120,948.51-49,912.78

Finding the Fourth Proportional to 87,665.26, 120,948.51 and 49,912.78

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Solution

The fourth proportional to 87,665.26, 120,948.51 and 49,912.78 is: 68,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,665.26 : 120,948.51 = 49,912.78 : x
  2. Step 2: Convert to fraction form
    87,665.26/120,948.51 = 49,912.78/x
  3. Step 3: Cross multiply
    87,665.26x = 120,948.51 × 49,912.78
  4. Step 4: Simplify right side
    87,665.26x = 6,036,876,370.96
  5. Step 5: Solve for x
    x = 6,036,876,370.96/87,665.26
  6. Step 6: Final answer
    x = 68,862.81

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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.