Home / 54,223.20-81,296.40-20,930.40

Finding the Fourth Proportional to 54,223.20, 81,296.40 and 20,930.40

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Solution

The fourth proportional to 54,223.20, 81,296.40 and 20,930.40 is: 31,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,223.20 : 81,296.40 = 20,930.40 : x
  2. Step 2: Convert to fraction form
    54,223.20/81,296.40 = 20,930.40/x
  3. Step 3: Cross multiply
    54,223.20x = 81,296.40 × 20,930.40
  4. Step 4: Simplify right side
    54,223.20x = 1,701,566,170.56
  5. Step 5: Solve for x
    x = 1,701,566,170.56/54,223.20
  6. Step 6: Final answer
    x = 31,380.78

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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.