Home / 78,343.20-117,591.60-38,944.80

Finding the Fourth Proportional to 78,343.20, 117,591.60 and 38,944.80

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Solution

The fourth proportional to 78,343.20, 117,591.60 and 38,944.80 is: 58,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,343.20 : 117,591.60 = 38,944.80 : x
  2. Step 2: Convert to fraction form
    78,343.20/117,591.60 = 38,944.80/x
  3. Step 3: Cross multiply
    78,343.20x = 117,591.60 × 38,944.80
  4. Step 4: Simplify right side
    78,343.20x = 4,579,581,343.68
  5. Step 5: Solve for x
    x = 4,579,581,343.68/78,343.20
  6. Step 6: Final answer
    x = 58,455.38

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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.