Home / 73,143.35-109,711.38-25,760.78

Finding the Fourth Proportional to 73,143.35, 109,711.38 and 25,760.78

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Solution

The fourth proportional to 73,143.35, 109,711.38 and 25,760.78 is: 38,639.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,143.35 : 109,711.38 = 25,760.78 : x
  2. Step 2: Convert to fraction form
    73,143.35/109,711.38 = 25,760.78/x
  3. Step 3: Cross multiply
    73,143.35x = 109,711.38 × 25,760.78
  4. Step 4: Simplify right side
    73,143.35x = 2,826,250,723.68
  5. Step 5: Solve for x
    x = 2,826,250,723.68/73,143.35
  6. Step 6: Final answer
    x = 38,639.89

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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.