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Finding the Fourth Proportional to 80,440.56, 120,666.60 and 27,857.52

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Solution

The fourth proportional to 80,440.56, 120,666.60 and 27,857.52 is: 41,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,440.56 : 120,666.60 = 27,857.52 : x
  2. Step 2: Convert to fraction form
    80,440.56/120,666.60 = 27,857.52/x
  3. Step 3: Cross multiply
    80,440.56x = 120,666.60 × 27,857.52
  4. Step 4: Simplify right side
    80,440.56x = 3,361,472,222.83
  5. Step 5: Solve for x
    x = 3,361,472,222.83/80,440.56
  6. Step 6: Final answer
    x = 41,788.27

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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.