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Finding the Fourth Proportional to 41,781.90, 62,674.90 and 13,690.56

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Solution

The fourth proportional to 41,781.90, 62,674.90 and 13,690.56 is: 20,536.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,781.90 : 62,674.90 = 13,690.56 : x
  2. Step 2: Convert to fraction form
    41,781.90/62,674.90 = 13,690.56/x
  3. Step 3: Cross multiply
    41,781.90x = 62,674.90 × 13,690.56
  4. Step 4: Simplify right side
    41,781.90x = 858,054,478.94
  5. Step 5: Solve for x
    x = 858,054,478.94/41,781.90
  6. Step 6: Final answer
    x = 20,536.51

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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.