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Finding the Fourth Proportional to 36,278.56, 50,067.84 and 21,170

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Solution

The fourth proportional to 36,278.56, 50,067.84 and 21,170 is: 29,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,278.56 : 50,067.84 = 21,170 : x
  2. Step 2: Convert to fraction form
    36,278.56/50,067.84 = 21,170/x
  3. Step 3: Cross multiply
    36,278.56x = 50,067.84 × 21,170
  4. Step 4: Simplify right side
    36,278.56x = 1,059,936,172.80
  5. Step 5: Solve for x
    x = 1,059,936,172.80/36,278.56
  6. Step 6: Final answer
    x = 29,216.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.