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Finding the Fourth Proportional to 66,245.78, 91,419.54 and 37,953.26

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Solution

The fourth proportional to 66,245.78, 91,419.54 and 37,953.26 is: 52,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.78 : 91,419.54 = 37,953.26 : x
  2. Step 2: Convert to fraction form
    66,245.78/91,419.54 = 37,953.26/x
  3. Step 3: Cross multiply
    66,245.78x = 91,419.54 × 37,953.26
  4. Step 4: Simplify right side
    66,245.78x = 3,469,669,570.70
  5. Step 5: Solve for x
    x = 3,469,669,570.70/66,245.78
  6. Step 6: Final answer
    x = 52,375.71

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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.