Home / 80,288.35-120,456.82-30,383.74

Finding the Fourth Proportional to 80,288.35, 120,456.82 and 30,383.74

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Solution

The fourth proportional to 80,288.35, 120,456.82 and 30,383.74 is: 45,584.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,288.35 : 120,456.82 = 30,383.74 : x
  2. Step 2: Convert to fraction form
    80,288.35/120,456.82 = 30,383.74/x
  3. Step 3: Cross multiply
    80,288.35x = 120,456.82 × 30,383.74
  4. Step 4: Simplify right side
    80,288.35x = 3,659,928,888.66
  5. Step 5: Solve for x
    x = 3,659,928,888.66/80,288.35
  6. Step 6: Final answer
    x = 45,584.81

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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.