Home / 80,719.43-121,079.24-38,589.60

Finding the Fourth Proportional to 80,719.43, 121,079.24 and 38,589.60

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Solution

The fourth proportional to 80,719.43, 121,079.24 and 38,589.60 is: 57,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.43 : 121,079.24 = 38,589.60 : x
  2. Step 2: Convert to fraction form
    80,719.43/121,079.24 = 38,589.60/x
  3. Step 3: Cross multiply
    80,719.43x = 121,079.24 × 38,589.60
  4. Step 4: Simplify right side
    80,719.43x = 4,672,399,246.96
  5. Step 5: Solve for x
    x = 4,672,399,246.96/80,719.43
  6. Step 6: Final answer
    x = 57,884.45

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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.