Home / 80,639.87-120,974.38-33,228.59

Finding the Fourth Proportional to 80,639.87, 120,974.38 and 33,228.59

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Solution

The fourth proportional to 80,639.87, 120,974.38 and 33,228.59 is: 49,848.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,639.87 : 120,974.38 = 33,228.59 : x
  2. Step 2: Convert to fraction form
    80,639.87/120,974.38 = 33,228.59/x
  3. Step 3: Cross multiply
    80,639.87x = 120,974.38 × 33,228.59
  4. Step 4: Simplify right side
    80,639.87x = 4,019,807,385.58
  5. Step 5: Solve for x
    x = 4,019,807,385.58/80,639.87
  6. Step 6: Final answer
    x = 49,848.89

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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.