Home / 54,147.20-81,234.65-20,858.33

Finding the Fourth Proportional to 54,147.20, 81,234.65 and 20,858.33

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Solution

The fourth proportional to 54,147.20, 81,234.65 and 20,858.33 is: 31,292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,147.20 : 81,234.65 = 20,858.33 : x
  2. Step 2: Convert to fraction form
    54,147.20/81,234.65 = 20,858.33/x
  3. Step 3: Cross multiply
    54,147.20x = 81,234.65 × 20,858.33
  4. Step 4: Simplify right side
    54,147.20x = 1,694,418,730.96
  5. Step 5: Solve for x
    x = 1,694,418,730.96/54,147.20
  6. Step 6: Final answer
    x = 31,292.82

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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.