Home / 54,188.62-81,286.10-20,908.86

Finding the Fourth Proportional to 54,188.62, 81,286.10 and 20,908.86

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Solution

The fourth proportional to 54,188.62, 81,286.10 and 20,908.86 is: 31,364.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,188.62 : 81,286.10 = 20,908.86 : x
  2. Step 2: Convert to fraction form
    54,188.62/81,286.10 = 20,908.86/x
  3. Step 3: Cross multiply
    54,188.62x = 81,286.10 × 20,908.86
  4. Step 4: Simplify right side
    54,188.62x = 1,699,599,684.85
  5. Step 5: Solve for x
    x = 1,699,599,684.85/54,188.62
  6. Step 6: Final answer
    x = 31,364.51

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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.