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Finding the Fourth Proportional to 36,696.40, 55,041.40 and 12,072.40

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Solution

The fourth proportional to 36,696.40, 55,041.40 and 12,072.40 is: 18,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,696.40 : 55,041.40 = 12,072.40 : x
  2. Step 2: Convert to fraction form
    36,696.40/55,041.40 = 12,072.40/x
  3. Step 3: Cross multiply
    36,696.40x = 55,041.40 × 12,072.40
  4. Step 4: Simplify right side
    36,696.40x = 664,481,797.36
  5. Step 5: Solve for x
    x = 664,481,797.36/36,696.40
  6. Step 6: Final answer
    x = 18,107.55

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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.