Home / 80,944.10-121,286.55-53,209.70

Finding the Fourth Proportional to 80,944.10, 121,286.55 and 53,209.70

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Solution

The fourth proportional to 80,944.10, 121,286.55 and 53,209.70 is: 79,729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,944.10 : 121,286.55 = 53,209.70 : x
  2. Step 2: Convert to fraction form
    80,944.10/121,286.55 = 53,209.70/x
  3. Step 3: Cross multiply
    80,944.10x = 121,286.55 × 53,209.70
  4. Step 4: Simplify right side
    80,944.10x = 6,453,620,939.54
  5. Step 5: Solve for x
    x = 6,453,620,939.54/80,944.10
  6. Step 6: Final answer
    x = 79,729.36

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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.