Home / 81,890.28-123,020.10-48,632.09

Finding the Fourth Proportional to 81,890.28, 123,020.10 and 48,632.09

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Solution

The fourth proportional to 81,890.28, 123,020.10 and 48,632.09 is: 73,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,890.28 : 123,020.10 = 48,632.09 : x
  2. Step 2: Convert to fraction form
    81,890.28/123,020.10 = 48,632.09/x
  3. Step 3: Cross multiply
    81,890.28x = 123,020.10 × 48,632.09
  4. Step 4: Simplify right side
    81,890.28x = 5,982,723,959.91
  5. Step 5: Solve for x
    x = 5,982,723,959.91/81,890.28
  6. Step 6: Final answer
    x = 73,057.80

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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.