Home / 81,043.38-121,538.82-26,993.70

Finding the Fourth Proportional to 81,043.38, 121,538.82 and 26,993.70

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Solution

The fourth proportional to 81,043.38, 121,538.82 and 26,993.70 is: 40,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,043.38 : 121,538.82 = 26,993.70 : x
  2. Step 2: Convert to fraction form
    81,043.38/121,538.82 = 26,993.70/x
  3. Step 3: Cross multiply
    81,043.38x = 121,538.82 × 26,993.70
  4. Step 4: Simplify right side
    81,043.38x = 3,280,782,445.43
  5. Step 5: Solve for x
    x = 3,280,782,445.43/81,043.38
  6. Step 6: Final answer
    x = 40,481.81

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1.5x scale

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.