Home / 53,933.28-80,911.20-18,391.68

Finding the Fourth Proportional to 53,933.28, 80,911.20 and 18,391.68

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Solution

The fourth proportional to 53,933.28, 80,911.20 and 18,391.68 is: 27,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,933.28 : 80,911.20 = 18,391.68 : x
  2. Step 2: Convert to fraction form
    53,933.28/80,911.20 = 18,391.68/x
  3. Step 3: Cross multiply
    53,933.28x = 80,911.20 × 18,391.68
  4. Step 4: Simplify right side
    53,933.28x = 1,488,092,898.82
  5. Step 5: Solve for x
    x = 1,488,092,898.82/53,933.28
  6. Step 6: Final answer
    x = 27,591.37

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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.