Home / 54,147.11-81,234.50-20,858.24

Finding the Fourth Proportional to 54,147.11, 81,234.50 and 20,858.24

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Solution

The fourth proportional to 54,147.11, 81,234.50 and 20,858.24 is: 31,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,147.11 : 81,234.50 = 20,858.24 : x
  2. Step 2: Convert to fraction form
    54,147.11/81,234.50 = 20,858.24/x
  3. Step 3: Cross multiply
    54,147.11x = 81,234.50 × 20,858.24
  4. Step 4: Simplify right side
    54,147.11x = 1,694,408,796.08
  5. Step 5: Solve for x
    x = 1,694,408,796.08/54,147.11
  6. Step 6: Final answer
    x = 31,292.69

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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.