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Finding the Fourth Proportional to 79,787.56, 110,079.92 and 49,562.14

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Solution

The fourth proportional to 79,787.56, 110,079.92 and 49,562.14 is: 68,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,787.56 : 110,079.92 = 49,562.14 : x
  2. Step 2: Convert to fraction form
    79,787.56/110,079.92 = 49,562.14/x
  3. Step 3: Cross multiply
    79,787.56x = 110,079.92 × 49,562.14
  4. Step 4: Simplify right side
    79,787.56x = 5,455,796,406.23
  5. Step 5: Solve for x
    x = 5,455,796,406.23/79,787.56
  6. Step 6: Final answer
    x = 68,379.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.