Home / 40,933.20-61,414.20-20,142.80

Finding the Fourth Proportional to 40,933.20, 61,414.20 and 20,142.80

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Solution

The fourth proportional to 40,933.20, 61,414.20 and 20,142.80 is: 30,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,933.20 : 61,414.20 = 20,142.80 : x
  2. Step 2: Convert to fraction form
    40,933.20/61,414.20 = 20,142.80/x
  3. Step 3: Cross multiply
    40,933.20x = 61,414.20 × 20,142.80
  4. Step 4: Simplify right side
    40,933.20x = 1,237,053,947.76
  5. Step 5: Solve for x
    x = 1,237,053,947.76/40,933.20
  6. Step 6: Final answer
    x = 30,221.29

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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.