Home / 80,942.19-121,384.12-34,198.71

Finding the Fourth Proportional to 80,942.19, 121,384.12 and 34,198.71

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Solution

The fourth proportional to 80,942.19, 121,384.12 and 34,198.71 is: 51,285.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,942.19 : 121,384.12 = 34,198.71 : x
  2. Step 2: Convert to fraction form
    80,942.19/121,384.12 = 34,198.71/x
  3. Step 3: Cross multiply
    80,942.19x = 121,384.12 × 34,198.71
  4. Step 4: Simplify right side
    80,942.19x = 4,151,180,318.49
  5. Step 5: Solve for x
    x = 4,151,180,318.49/80,942.19
  6. Step 6: Final answer
    x = 51,285.74

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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.