Home / 54,138.06-81,215.85-16,689.37

Finding the Fourth Proportional to 54,138.06, 81,215.85 and 16,689.37

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Solution

The fourth proportional to 54,138.06, 81,215.85 and 16,689.37 is: 25,036.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,138.06 : 81,215.85 = 16,689.37 : x
  2. Step 2: Convert to fraction form
    54,138.06/81,215.85 = 16,689.37/x
  3. Step 3: Cross multiply
    54,138.06x = 81,215.85 × 16,689.37
  4. Step 4: Simplify right side
    54,138.06x = 1,355,441,409.45
  5. Step 5: Solve for x
    x = 1,355,441,409.45/54,138.06
  6. Step 6: Final answer
    x = 25,036.76

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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.