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Finding the Fourth Proportional to 73,163.70, 109,745.55 and 28,766.21

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Solution

The fourth proportional to 73,163.70, 109,745.55 and 28,766.21 is: 43,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,163.70 : 109,745.55 = 28,766.21 : x
  2. Step 2: Convert to fraction form
    73,163.70/109,745.55 = 28,766.21/x
  3. Step 3: Cross multiply
    73,163.70x = 109,745.55 × 28,766.21
  4. Step 4: Simplify right side
    73,163.70x = 3,156,962,989.14
  5. Step 5: Solve for x
    x = 3,156,962,989.14/73,163.70
  6. Step 6: Final answer
    x = 43,149.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.