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Finding the Fourth Proportional to 79,471.44, 109,474.74 and 68,104.44

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Solution

The fourth proportional to 79,471.44, 109,474.74 and 68,104.44 is: 93,816.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,471.44 : 109,474.74 = 68,104.44 : x
  2. Step 2: Convert to fraction form
    79,471.44/109,474.74 = 68,104.44/x
  3. Step 3: Cross multiply
    79,471.44x = 109,474.74 × 68,104.44
  4. Step 4: Simplify right side
    79,471.44x = 7,455,715,861.85
  5. Step 5: Solve for x
    x = 7,455,715,861.85/79,471.44
  6. Step 6: Final answer
    x = 93,816.29

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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.