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Finding the Fourth Proportional to 78,163.80, 107,865.59 and 44,183.30

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Solution

The fourth proportional to 78,163.80, 107,865.59 and 44,183.30 is: 60,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,163.80 : 107,865.59 = 44,183.30 : x
  2. Step 2: Convert to fraction form
    78,163.80/107,865.59 = 44,183.30/x
  3. Step 3: Cross multiply
    78,163.80x = 107,865.59 × 44,183.30
  4. Step 4: Simplify right side
    78,163.80x = 4,765,856,962.40
  5. Step 5: Solve for x
    x = 4,765,856,962.40/78,163.80
  6. Step 6: Final answer
    x = 60,972.69

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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.