Home / 54,190.62-81,289.10-20,910.86

Finding the Fourth Proportional to 54,190.62, 81,289.10 and 20,910.86

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Solution

The fourth proportional to 54,190.62, 81,289.10 and 20,910.86 is: 31,367.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,190.62 : 81,289.10 = 20,910.86 : x
  2. Step 2: Convert to fraction form
    54,190.62/81,289.10 = 20,910.86/x
  3. Step 3: Cross multiply
    54,190.62x = 81,289.10 × 20,910.86
  4. Step 4: Simplify right side
    54,190.62x = 1,699,824,989.63
  5. Step 5: Solve for x
    x = 1,699,824,989.63/54,190.62
  6. Step 6: Final answer
    x = 31,367.51

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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.