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Finding the Fourth Proportional to 66,540.56, 91,824.60 and 36,326.48

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Solution

The fourth proportional to 66,540.56, 91,824.60 and 36,326.48 is: 50,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,540.56 : 91,824.60 = 36,326.48 : x
  2. Step 2: Convert to fraction form
    66,540.56/91,824.60 = 36,326.48/x
  3. Step 3: Cross multiply
    66,540.56x = 91,824.60 × 36,326.48
  4. Step 4: Simplify right side
    66,540.56x = 3,335,664,495.41
  5. Step 5: Solve for x
    x = 3,335,664,495.41/66,540.56
  6. Step 6: Final answer
    x = 50,129.79

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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.