Home / 54,440.09-81,691.31-21,155.84

Finding the Fourth Proportional to 54,440.09, 81,691.31 and 21,155.84

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Solution

The fourth proportional to 54,440.09, 81,691.31 and 21,155.84 is: 31,745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,440.09 : 81,691.31 = 21,155.84 : x
  2. Step 2: Convert to fraction form
    54,440.09/81,691.31 = 21,155.84/x
  3. Step 3: Cross multiply
    54,440.09x = 81,691.31 × 21,155.84
  4. Step 4: Simplify right side
    54,440.09x = 1,728,247,928.18
  5. Step 5: Solve for x
    x = 1,728,247,928.18/54,440.09
  6. Step 6: Final answer
    x = 31,745.87

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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.