Home / 55,651.11-83,481.81-20,121.31

Finding the Fourth Proportional to 55,651.11, 83,481.81 and 20,121.31

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Solution

The fourth proportional to 55,651.11, 83,481.81 and 20,121.31 is: 30,183.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,651.11 : 83,481.81 = 20,121.31 : x
  2. Step 2: Convert to fraction form
    55,651.11/83,481.81 = 20,121.31/x
  3. Step 3: Cross multiply
    55,651.11x = 83,481.81 × 20,121.31
  4. Step 4: Simplify right side
    55,651.11x = 1,679,763,378.37
  5. Step 5: Solve for x
    x = 1,679,763,378.37/55,651.11
  6. Step 6: Final answer
    x = 30,183.83

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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.