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Finding the Fourth Proportional to 55,161.70, 82,764.15 and 20,104.90

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Solution

The fourth proportional to 55,161.70, 82,764.15 and 20,104.90 is: 30,165.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,161.70 : 82,764.15 = 20,104.90 : x
  2. Step 2: Convert to fraction form
    55,161.70/82,764.15 = 20,104.90/x
  3. Step 3: Cross multiply
    55,161.70x = 82,764.15 × 20,104.90
  4. Step 4: Simplify right side
    55,161.70x = 1,663,964,959.34
  5. Step 5: Solve for x
    x = 1,663,964,959.34/55,161.70
  6. Step 6: Final answer
    x = 30,165.22

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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.