Home / 54,118.13-81,166.05-20,826.72

Finding the Fourth Proportional to 54,118.13, 81,166.05 and 20,826.72

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Solution

The fourth proportional to 54,118.13, 81,166.05 and 20,826.72 is: 31,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,118.13 : 81,166.05 = 20,826.72 : x
  2. Step 2: Convert to fraction form
    54,118.13/81,166.05 = 20,826.72/x
  3. Step 3: Cross multiply
    54,118.13x = 81,166.05 × 20,826.72
  4. Step 4: Simplify right side
    54,118.13x = 1,690,422,596.86
  5. Step 5: Solve for x
    x = 1,690,422,596.86/54,118.13
  6. Step 6: Final answer
    x = 31,235.79

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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.