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Finding the Fourth Proportional to 79,380.44, 109,546.42 and 43,573.78

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Solution

The fourth proportional to 79,380.44, 109,546.42 and 43,573.78 is: 60,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,380.44 : 109,546.42 = 43,573.78 : x
  2. Step 2: Convert to fraction form
    79,380.44/109,546.42 = 43,573.78/x
  3. Step 3: Cross multiply
    79,380.44x = 109,546.42 × 43,573.78
  4. Step 4: Simplify right side
    79,380.44x = 4,773,351,604.87
  5. Step 5: Solve for x
    x = 4,773,351,604.87/79,380.44
  6. Step 6: Final answer
    x = 60,132.60

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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.