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Finding the Fourth Proportional to 79,143.62, 109,212.50 and 43,327.85

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Solution

The fourth proportional to 79,143.62, 109,212.50 and 43,327.85 is: 59,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,143.62 : 109,212.50 = 43,327.85 : x
  2. Step 2: Convert to fraction form
    79,143.62/109,212.50 = 43,327.85/x
  3. Step 3: Cross multiply
    79,143.62x = 109,212.50 × 43,327.85
  4. Step 4: Simplify right side
    79,143.62x = 4,731,942,380.38
  5. Step 5: Solve for x
    x = 4,731,942,380.38/79,143.62
  6. Step 6: Final answer
    x = 59,789.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.