Home / 54,269.20-81,365.40-20,976.40

Finding the Fourth Proportional to 54,269.20, 81,365.40 and 20,976.40

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Solution

The fourth proportional to 54,269.20, 81,365.40 and 20,976.40 is: 31,449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,269.20 : 81,365.40 = 20,976.40 : x
  2. Step 2: Convert to fraction form
    54,269.20/81,365.40 = 20,976.40/x
  3. Step 3: Cross multiply
    54,269.20x = 81,365.40 × 20,976.40
  4. Step 4: Simplify right side
    54,269.20x = 1,706,753,176.56
  5. Step 5: Solve for x
    x = 1,706,753,176.56/54,269.20
  6. Step 6: Final answer
    x = 31,449.76

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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.