Home / 55,291.55-82,949.85-20,231.20

Finding the Fourth Proportional to 55,291.55, 82,949.85 and 20,231.20

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Solution

The fourth proportional to 55,291.55, 82,949.85 and 20,231.20 is: 30,351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,291.55 : 82,949.85 = 20,231.20 : x
  2. Step 2: Convert to fraction form
    55,291.55/82,949.85 = 20,231.20/x
  3. Step 3: Cross multiply
    55,291.55x = 82,949.85 × 20,231.20
  4. Step 4: Simplify right side
    55,291.55x = 1,678,174,797.95
  5. Step 5: Solve for x
    x = 1,678,174,797.95/55,291.55
  6. Step 6: Final answer
    x = 30,351.38

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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.