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Finding the Fourth Proportional to 80,079.54, 120,162.09 and 51,992.94

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Solution

The fourth proportional to 80,079.54, 120,162.09 and 51,992.94 is: 78,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,079.54 : 120,162.09 = 51,992.94 : x
  2. Step 2: Convert to fraction form
    80,079.54/120,162.09 = 51,992.94/x
  3. Step 3: Cross multiply
    80,079.54x = 120,162.09 × 51,992.94
  4. Step 4: Simplify right side
    80,079.54x = 6,247,580,335.64
  5. Step 5: Solve for x
    x = 6,247,580,335.64/80,079.54
  6. Step 6: Final answer
    x = 78,017.19

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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.