Home / 77,414.27-116,121.59-21,255.15

Finding the Fourth Proportional to 77,414.27, 116,121.59 and 21,255.15

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Solution

The fourth proportional to 77,414.27, 116,121.59 and 21,255.15 is: 31,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,414.27 : 116,121.59 = 21,255.15 : x
  2. Step 2: Convert to fraction form
    77,414.27/116,121.59 = 21,255.15/x
  3. Step 3: Cross multiply
    77,414.27x = 116,121.59 × 21,255.15
  4. Step 4: Simplify right side
    77,414.27x = 2,468,181,707.41
  5. Step 5: Solve for x
    x = 2,468,181,707.41/77,414.27
  6. Step 6: Final answer
    x = 31,882.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.