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Finding the Fourth Proportional to 41,107.50, 61,661.25 and 13,405.50

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Solution

The fourth proportional to 41,107.50, 61,661.25 and 13,405.50 is: 20,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,107.50 : 61,661.25 = 13,405.50 : x
  2. Step 2: Convert to fraction form
    41,107.50/61,661.25 = 13,405.50/x
  3. Step 3: Cross multiply
    41,107.50x = 61,661.25 × 13,405.50
  4. Step 4: Simplify right side
    41,107.50x = 826,599,886.88
  5. Step 5: Solve for x
    x = 826,599,886.88/41,107.50
  6. Step 6: Final answer
    x = 20,108.25

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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.