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Finding the Fourth Proportional to 66,446.26, 91,695.16 and 36,231.50

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Solution

The fourth proportional to 66,446.26, 91,695.16 and 36,231.50 is: 49,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446.26 : 91,695.16 = 36,231.50 : x
  2. Step 2: Convert to fraction form
    66,446.26/91,695.16 = 36,231.50/x
  3. Step 3: Cross multiply
    66,446.26x = 91,695.16 × 36,231.50
  4. Step 4: Simplify right side
    66,446.26x = 3,322,253,189.54
  5. Step 5: Solve for x
    x = 3,322,253,189.54/66,446.26
  6. Step 6: Final answer
    x = 49,999.10

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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.