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Finding the Fourth Proportional to 80,466.78, 120,698.75 and 33,103.65

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Solution

The fourth proportional to 80,466.78, 120,698.75 and 33,103.65 is: 49,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,466.78 : 120,698.75 = 33,103.65 : x
  2. Step 2: Convert to fraction form
    80,466.78/120,698.75 = 33,103.65/x
  3. Step 3: Cross multiply
    80,466.78x = 120,698.75 × 33,103.65
  4. Step 4: Simplify right side
    80,466.78x = 3,995,569,175.44
  5. Step 5: Solve for x
    x = 3,995,569,175.44/80,466.78
  6. Step 6: Final answer
    x = 49,654.89

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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.