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Finding the Fourth Proportional to 78,379.80, 108,170.80 and 44,394.34

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Solution

The fourth proportional to 78,379.80, 108,170.80 and 44,394.34 is: 61,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,379.80 : 108,170.80 = 44,394.34 : x
  2. Step 2: Convert to fraction form
    78,379.80/108,170.80 = 44,394.34/x
  3. Step 3: Cross multiply
    78,379.80x = 108,170.80 × 44,394.34
  4. Step 4: Simplify right side
    78,379.80x = 4,802,171,273.27
  5. Step 5: Solve for x
    x = 4,802,171,273.27/78,379.80
  6. Step 6: Final answer
    x = 61,267.97

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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.