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Finding the Fourth Proportional to 79,163.10, 118,707.72 and 45,892.68

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Solution

The fourth proportional to 79,163.10, 118,707.72 and 45,892.68 is: 68,817.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,163.10 : 118,707.72 = 45,892.68 : x
  2. Step 2: Convert to fraction form
    79,163.10/118,707.72 = 45,892.68/x
  3. Step 3: Cross multiply
    79,163.10x = 118,707.72 × 45,892.68
  4. Step 4: Simplify right side
    79,163.10x = 5,447,815,407.49
  5. Step 5: Solve for x
    x = 5,447,815,407.49/79,163.10
  6. Step 6: Final answer
    x = 68,817.61

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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.