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Finding the Fourth Proportional to 80,620.92, 120,940.20 and 27,351.36

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Solution

The fourth proportional to 80,620.92, 120,940.20 and 27,351.36 is: 41,030.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,620.92 : 120,940.20 = 27,351.36 : x
  2. Step 2: Convert to fraction form
    80,620.92/120,940.20 = 27,351.36/x
  3. Step 3: Cross multiply
    80,620.92x = 120,940.20 × 27,351.36
  4. Step 4: Simplify right side
    80,620.92x = 3,307,878,948.67
  5. Step 5: Solve for x
    x = 3,307,878,948.67/80,620.92
  6. Step 6: Final answer
    x = 41,030.03

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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.