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Finding the Fourth Proportional to 37,121.52, 55,691.04 and 12,161.52

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Solution

The fourth proportional to 37,121.52, 55,691.04 and 12,161.52 is: 18,245.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,121.52 : 55,691.04 = 12,161.52 : x
  2. Step 2: Convert to fraction form
    37,121.52/55,691.04 = 12,161.52/x
  3. Step 3: Cross multiply
    37,121.52x = 55,691.04 × 12,161.52
  4. Step 4: Simplify right side
    37,121.52x = 677,287,696.78
  5. Step 5: Solve for x
    x = 677,287,696.78/37,121.52
  6. Step 6: Final answer
    x = 18,245.15

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1.5x scale

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.