Home / 33,219.20-49,731.60-22,138.40

Finding the Fourth Proportional to 33,219.20, 49,731.60 and 22,138.40

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Solution

The fourth proportional to 33,219.20, 49,731.60 and 22,138.40 is: 33,142.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,219.20 : 49,731.60 = 22,138.40 : x
  2. Step 2: Convert to fraction form
    33,219.20/49,731.60 = 22,138.40/x
  3. Step 3: Cross multiply
    33,219.20x = 49,731.60 × 22,138.40
  4. Step 4: Simplify right side
    33,219.20x = 1,100,978,053.44
  5. Step 5: Solve for x
    x = 1,100,978,053.44/33,219.20
  6. Step 6: Final answer
    x = 33,142.82

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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.