Home / 54,789.12-82,169.28-19,722.24

Finding the Fourth Proportional to 54,789.12, 82,169.28 and 19,722.24

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Solution

The fourth proportional to 54,789.12, 82,169.28 and 19,722.24 is: 29,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,789.12 : 82,169.28 = 19,722.24 : x
  2. Step 2: Convert to fraction form
    54,789.12/82,169.28 = 19,722.24/x
  3. Step 3: Cross multiply
    54,789.12x = 82,169.28 × 19,722.24
  4. Step 4: Simplify right side
    54,789.12x = 1,620,562,260.79
  5. Step 5: Solve for x
    x = 1,620,562,260.79/54,789.12
  6. Step 6: Final answer
    x = 29,578.18

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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.