Home / 55,121.28-76,067.01-29,970.78

Finding the Fourth Proportional to 55,121.28, 76,067.01 and 29,970.78

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Solution

The fourth proportional to 55,121.28, 76,067.01 and 29,970.78 is: 41,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,121.28 : 76,067.01 = 29,970.78 : x
  2. Step 2: Convert to fraction form
    55,121.28/76,067.01 = 29,970.78/x
  3. Step 3: Cross multiply
    55,121.28x = 76,067.01 × 29,970.78
  4. Step 4: Simplify right side
    55,121.28x = 2,279,787,621.97
  5. Step 5: Solve for x
    x = 2,279,787,621.97/55,121.28
  6. Step 6: Final answer
    x = 41,359.48

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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.