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Finding the Fourth Proportional to 73,163.40, 109,745.10 and 43,614.60

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Solution

The fourth proportional to 73,163.40, 109,745.10 and 43,614.60 is: 65,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,163.40 : 109,745.10 = 43,614.60 : x
  2. Step 2: Convert to fraction form
    73,163.40/109,745.10 = 43,614.60/x
  3. Step 3: Cross multiply
    73,163.40x = 109,745.10 × 43,614.60
  4. Step 4: Simplify right side
    73,163.40x = 4,786,488,638.46
  5. Step 5: Solve for x
    x = 4,786,488,638.46/73,163.40
  6. Step 6: Final answer
    x = 65,421.90

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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.