Home / 54,519.26-81,763.09-21,231.90

Finding the Fourth Proportional to 54,519.26, 81,763.09 and 21,231.90

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Solution

The fourth proportional to 54,519.26, 81,763.09 and 21,231.90 is: 31,841.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,519.26 : 81,763.09 = 21,231.90 : x
  2. Step 2: Convert to fraction form
    54,519.26/81,763.09 = 21,231.90/x
  3. Step 3: Cross multiply
    54,519.26x = 81,763.09 × 21,231.90
  4. Step 4: Simplify right side
    54,519.26x = 1,735,985,697.49
  5. Step 5: Solve for x
    x = 1,735,985,697.49/54,519.26
  6. Step 6: Final answer
    x = 31,841.70

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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.