Home / 54,129.20-81,193.90-20,864.92

Finding the Fourth Proportional to 54,129.20, 81,193.90 and 20,864.92

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Solution

The fourth proportional to 54,129.20, 81,193.90 and 20,864.92 is: 31,297.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,129.20 : 81,193.90 = 20,864.92 : x
  2. Step 2: Convert to fraction form
    54,129.20/81,193.90 = 20,864.92/x
  3. Step 3: Cross multiply
    54,129.20x = 81,193.90 × 20,864.92
  4. Step 4: Simplify right side
    54,129.20x = 1,694,104,227.99
  5. Step 5: Solve for x
    x = 1,694,104,227.99/54,129.20
  6. Step 6: Final answer
    x = 31,297.42

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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.