Home / 54,138.43-81,216.41-16,689.75

Finding the Fourth Proportional to 54,138.43, 81,216.41 and 16,689.75

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Solution

The fourth proportional to 54,138.43, 81,216.41 and 16,689.75 is: 25,037.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,138.43 : 81,216.41 = 16,689.75 : x
  2. Step 2: Convert to fraction form
    54,138.43/81,216.41 = 16,689.75/x
  3. Step 3: Cross multiply
    54,138.43x = 81,216.41 × 16,689.75
  4. Step 4: Simplify right side
    54,138.43x = 1,355,481,190.79
  5. Step 5: Solve for x
    x = 1,355,481,190.79/54,138.43
  6. Step 6: Final answer
    x = 25,037.32

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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.