Home / 54,291.22-81,453.24-20,999.61

Finding the Fourth Proportional to 54,291.22, 81,453.24 and 20,999.61

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Solution

The fourth proportional to 54,291.22, 81,453.24 and 20,999.61 is: 31,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,291.22 : 81,453.24 = 20,999.61 : x
  2. Step 2: Convert to fraction form
    54,291.22/81,453.24 = 20,999.61/x
  3. Step 3: Cross multiply
    54,291.22x = 81,453.24 × 20,999.61
  4. Step 4: Simplify right side
    54,291.22x = 1,710,486,273.24
  5. Step 5: Solve for x
    x = 1,710,486,273.24/54,291.22
  6. Step 6: Final answer
    x = 31,505.76

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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.