Home / 54,481.21-81,700.25-21,196.43

Finding the Fourth Proportional to 54,481.21, 81,700.25 and 21,196.43

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Solution

The fourth proportional to 54,481.21, 81,700.25 and 21,196.43 is: 31,786.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,481.21 : 81,700.25 = 21,196.43 : x
  2. Step 2: Convert to fraction form
    54,481.21/81,700.25 = 21,196.43/x
  3. Step 3: Cross multiply
    54,481.21x = 81,700.25 × 21,196.43
  4. Step 4: Simplify right side
    54,481.21x = 1,731,753,881.56
  5. Step 5: Solve for x
    x = 1,731,753,881.56/54,481.21
  6. Step 6: Final answer
    x = 31,786.26

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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.