Home / 80,609.32-111,308.01-67,250.61

Finding the Fourth Proportional to 80,609.32, 111,308.01 and 67,250.61

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Solution

The fourth proportional to 80,609.32, 111,308.01 and 67,250.61 is: 92,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,609.32 : 111,308.01 = 67,250.61 : x
  2. Step 2: Convert to fraction form
    80,609.32/111,308.01 = 67,250.61/x
  3. Step 3: Cross multiply
    80,609.32x = 111,308.01 × 67,250.61
  4. Step 4: Simplify right side
    80,609.32x = 7,485,531,570.39
  5. Step 5: Solve for x
    x = 7,485,531,570.39/80,609.32
  6. Step 6: Final answer
    x = 92,861.86

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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.