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Finding the Fourth Proportional to 80,984.36, 111,758.36 and 45,174.36

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Solution

The fourth proportional to 80,984.36, 111,758.36 and 45,174.36 is: 62,340.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,984.36 : 111,758.36 = 45,174.36 : x
  2. Step 2: Convert to fraction form
    80,984.36/111,758.36 = 45,174.36/x
  3. Step 3: Cross multiply
    80,984.36x = 111,758.36 × 45,174.36
  4. Step 4: Simplify right side
    80,984.36x = 5,048,612,387.65
  5. Step 5: Solve for x
    x = 5,048,612,387.65/80,984.36
  6. Step 6: Final answer
    x = 62,340.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.