Home / 55,170.70-82,756.05-20,105.80

Finding the Fourth Proportional to 55,170.70, 82,756.05 and 20,105.80

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Solution

The fourth proportional to 55,170.70, 82,756.05 and 20,105.80 is: 30,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,170.70 : 82,756.05 = 20,105.80 : x
  2. Step 2: Convert to fraction form
    55,170.70/82,756.05 = 20,105.80/x
  3. Step 3: Cross multiply
    55,170.70x = 82,756.05 × 20,105.80
  4. Step 4: Simplify right side
    55,170.70x = 1,663,876,590.09
  5. Step 5: Solve for x
    x = 1,663,876,590.09/55,170.70
  6. Step 6: Final answer
    x = 30,158.70

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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.