Home / 55,174.20-82,761.30-20,109.30

Finding the Fourth Proportional to 55,174.20, 82,761.30 and 20,109.30

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Solution

The fourth proportional to 55,174.20, 82,761.30 and 20,109.30 is: 30,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,174.20 : 82,761.30 = 20,109.30 : x
  2. Step 2: Convert to fraction form
    55,174.20/82,761.30 = 20,109.30/x
  3. Step 3: Cross multiply
    55,174.20x = 82,761.30 × 20,109.30
  4. Step 4: Simplify right side
    55,174.20x = 1,664,271,810.09
  5. Step 5: Solve for x
    x = 1,664,271,810.09/55,174.20
  6. Step 6: Final answer
    x = 30,163.95

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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.