Home / 54,144.36-81,230.38-20,855.49

Finding the Fourth Proportional to 54,144.36, 81,230.38 and 20,855.49

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Solution

The fourth proportional to 54,144.36, 81,230.38 and 20,855.49 is: 31,288.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,144.36 : 81,230.38 = 20,855.49 : x
  2. Step 2: Convert to fraction form
    54,144.36/81,230.38 = 20,855.49/x
  3. Step 3: Cross multiply
    54,144.36x = 81,230.38 × 20,855.49
  4. Step 4: Simplify right side
    54,144.36x = 1,694,099,021.03
  5. Step 5: Solve for x
    x = 1,694,099,021.03/54,144.36
  6. Step 6: Final answer
    x = 31,288.56

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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.