Home / 55,385.70-83,122.26-20,335.38

Finding the Fourth Proportional to 55,385.70, 83,122.26 and 20,335.38

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Solution

The fourth proportional to 55,385.70, 83,122.26 and 20,335.38 is: 30,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,385.70 : 83,122.26 = 20,335.38 : x
  2. Step 2: Convert to fraction form
    55,385.70/83,122.26 = 20,335.38/x
  3. Step 3: Cross multiply
    55,385.70x = 83,122.26 × 20,335.38
  4. Step 4: Simplify right side
    55,385.70x = 1,690,322,743.56
  5. Step 5: Solve for x
    x = 1,690,322,743.56/55,385.70
  6. Step 6: Final answer
    x = 30,519.12

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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.