Home / 41,205.39-61,787.61-13,121.78

Finding the Fourth Proportional to 41,205.39, 61,787.61 and 13,121.78

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Solution

The fourth proportional to 41,205.39, 61,787.61 and 13,121.78 is: 19,676.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,205.39 : 61,787.61 = 13,121.78 : x
  2. Step 2: Convert to fraction form
    41,205.39/61,787.61 = 13,121.78/x
  3. Step 3: Cross multiply
    41,205.39x = 61,787.61 × 13,121.78
  4. Step 4: Simplify right side
    41,205.39x = 810,763,425.15
  5. Step 5: Solve for x
    x = 810,763,425.15/41,205.39
  6. Step 6: Final answer
    x = 19,676.15

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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.