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Finding the Fourth Proportional to 55,169.70, 82,754.55 and 20,104.80

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Solution

The fourth proportional to 55,169.70, 82,754.55 and 20,104.80 is: 30,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,169.70 : 82,754.55 = 20,104.80 : x
  2. Step 2: Convert to fraction form
    55,169.70/82,754.55 = 20,104.80/x
  3. Step 3: Cross multiply
    55,169.70x = 82,754.55 × 20,104.80
  4. Step 4: Simplify right side
    55,169.70x = 1,663,763,676.84
  5. Step 5: Solve for x
    x = 1,663,763,676.84/55,169.70
  6. Step 6: Final answer
    x = 30,157.20

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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.