Home / 54,121.28-81,190-16,678.24

Finding the Fourth Proportional to 54,121.28, 81,190 and 16,678.24

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Solution

The fourth proportional to 54,121.28, 81,190 and 16,678.24 is: 25,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121.28 : 81,190 = 16,678.24 : x
  2. Step 2: Convert to fraction form
    54,121.28/81,190 = 16,678.24/x
  3. Step 3: Cross multiply
    54,121.28x = 81,190 × 16,678.24
  4. Step 4: Simplify right side
    54,121.28x = 1,354,106,305.60
  5. Step 5: Solve for x
    x = 1,354,106,305.60/54,121.28
  6. Step 6: Final answer
    x = 25,019.85

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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.