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Finding the Fourth Proportional to 44,164.88, 66,216 and 20,778.56

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Solution

The fourth proportional to 44,164.88, 66,216 and 20,778.56 is: 31,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,164.88 : 66,216 = 20,778.56 : x
  2. Step 2: Convert to fraction form
    44,164.88/66,216 = 20,778.56/x
  3. Step 3: Cross multiply
    44,164.88x = 66,216 × 20,778.56
  4. Step 4: Simplify right side
    44,164.88x = 1,375,873,128.96
  5. Step 5: Solve for x
    x = 1,375,873,128.96/44,164.88
  6. Step 6: Final answer
    x = 31,153.10

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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.