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Finding the Fourth Proportional to 78,379.42, 108,163.56 and 44,845.42

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Solution

The fourth proportional to 78,379.42, 108,163.56 and 44,845.42 is: 61,886.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,379.42 : 108,163.56 = 44,845.42 : x
  2. Step 2: Convert to fraction form
    78,379.42/108,163.56 = 44,845.42/x
  3. Step 3: Cross multiply
    78,379.42x = 108,163.56 × 44,845.42
  4. Step 4: Simplify right side
    78,379.42x = 4,850,640,276.90
  5. Step 5: Solve for x
    x = 4,850,640,276.90/78,379.42
  6. Step 6: Final answer
    x = 61,886.66

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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.