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Finding the Fourth Proportional to 92,209.20, 138,313.80 and 29,879.70

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Solution

The fourth proportional to 92,209.20, 138,313.80 and 29,879.70 is: 44,819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,209.20 : 138,313.80 = 29,879.70 : x
  2. Step 2: Convert to fraction form
    92,209.20/138,313.80 = 29,879.70/x
  3. Step 3: Cross multiply
    92,209.20x = 138,313.80 × 29,879.70
  4. Step 4: Simplify right side
    92,209.20x = 4,132,774,849.86
  5. Step 5: Solve for x
    x = 4,132,774,849.86/92,209.20
  6. Step 6: Final answer
    x = 44,819.55

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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.