Home / 80,384.40-120,508.56-30,436.97

Finding the Fourth Proportional to 80,384.40, 120,508.56 and 30,436.97

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Solution

The fourth proportional to 80,384.40, 120,508.56 and 30,436.97 is: 45,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,384.40 : 120,508.56 = 30,436.97 : x
  2. Step 2: Convert to fraction form
    80,384.40/120,508.56 = 30,436.97/x
  3. Step 3: Cross multiply
    80,384.40x = 120,508.56 × 30,436.97
  4. Step 4: Simplify right side
    80,384.40x = 3,667,914,822.92
  5. Step 5: Solve for x
    x = 3,667,914,822.92/80,384.40
  6. Step 6: Final answer
    x = 45,629.68

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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.