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Finding the Fourth Proportional to 66,469.58, 91,729.11 and 36,254.90

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Solution

The fourth proportional to 66,469.58, 91,729.11 and 36,254.90 is: 50,032.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,469.58 : 91,729.11 = 36,254.90 : x
  2. Step 2: Convert to fraction form
    66,469.58/91,729.11 = 36,254.90/x
  3. Step 3: Cross multiply
    66,469.58x = 91,729.11 × 36,254.90
  4. Step 4: Simplify right side
    66,469.58x = 3,325,629,710.14
  5. Step 5: Solve for x
    x = 3,325,629,710.14/66,469.58
  6. Step 6: Final answer
    x = 50,032.36

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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.