Home / 80,942.31-121,384.31-34,198.83

Finding the Fourth Proportional to 80,942.31, 121,384.31 and 34,198.83

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Solution

The fourth proportional to 80,942.31, 121,384.31 and 34,198.83 is: 51,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,942.31 : 121,384.31 = 34,198.83 : x
  2. Step 2: Convert to fraction form
    80,942.31/121,384.31 = 34,198.83/x
  3. Step 3: Cross multiply
    80,942.31x = 121,384.31 × 34,198.83
  4. Step 4: Simplify right side
    80,942.31x = 4,151,201,211.36
  5. Step 5: Solve for x
    x = 4,151,201,211.36/80,942.31
  6. Step 6: Final answer
    x = 51,285.92

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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.