Home / 80,251.56-120,305.76-38,105.64

Finding the Fourth Proportional to 80,251.56, 120,305.76 and 38,105.64

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Solution

The fourth proportional to 80,251.56, 120,305.76 and 38,105.64 is: 57,124.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,251.56 : 120,305.76 = 38,105.64 : x
  2. Step 2: Convert to fraction form
    80,251.56/120,305.76 = 38,105.64/x
  3. Step 3: Cross multiply
    80,251.56x = 120,305.76 × 38,105.64
  4. Step 4: Simplify right side
    80,251.56x = 4,584,327,980.49
  5. Step 5: Solve for x
    x = 4,584,327,980.49/80,251.56
  6. Step 6: Final answer
    x = 57,124.47

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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.