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Finding the Fourth Proportional to 80,628.78, 120,943.45 and 24,469.34

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Solution

The fourth proportional to 80,628.78, 120,943.45 and 24,469.34 is: 36,704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,628.78 : 120,943.45 = 24,469.34 : x
  2. Step 2: Convert to fraction form
    80,628.78/120,943.45 = 24,469.34/x
  3. Step 3: Cross multiply
    80,628.78x = 120,943.45 × 24,469.34
  4. Step 4: Simplify right side
    80,628.78x = 2,959,406,398.82
  5. Step 5: Solve for x
    x = 2,959,406,398.82/80,628.78
  6. Step 6: Final answer
    x = 36,704.09

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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.