Home / 80,920.38-121,380.57-25,516.38

Finding the Fourth Proportional to 80,920.38, 121,380.57 and 25,516.38

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Solution

The fourth proportional to 80,920.38, 121,380.57 and 25,516.38 is: 38,274.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,920.38 : 121,380.57 = 25,516.38 : x
  2. Step 2: Convert to fraction form
    80,920.38/121,380.57 = 25,516.38/x
  3. Step 3: Cross multiply
    80,920.38x = 121,380.57 × 25,516.38
  4. Step 4: Simplify right side
    80,920.38x = 3,097,192,014.25
  5. Step 5: Solve for x
    x = 3,097,192,014.25/80,920.38
  6. Step 6: Final answer
    x = 38,274.56

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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.