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Finding the Fourth Proportional to 79,751.35, 119,627.21 and 74,879.83

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Solution

The fourth proportional to 79,751.35, 119,627.21 and 74,879.83 is: 112,319.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,751.35 : 119,627.21 = 74,879.83 : x
  2. Step 2: Convert to fraction form
    79,751.35/119,627.21 = 74,879.83/x
  3. Step 3: Cross multiply
    79,751.35x = 119,627.21 × 74,879.83
  4. Step 4: Simplify right side
    79,751.35x = 8,957,665,148.17
  5. Step 5: Solve for x
    x = 8,957,665,148.17/79,751.35
  6. Step 6: Final answer
    x = 112,319.92

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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.