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Finding the Fourth Proportional to 66,242, 91,414.20 and 36,027.32

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Solution

The fourth proportional to 66,242, 91,414.20 and 36,027.32 is: 49,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,242 : 91,414.20 = 36,027.32 : x
  2. Step 2: Convert to fraction form
    66,242/91,414.20 = 36,027.32/x
  3. Step 3: Cross multiply
    66,242x = 91,414.20 × 36,027.32
  4. Step 4: Simplify right side
    66,242x = 3,293,408,635.94
  5. Step 5: Solve for x
    x = 3,293,408,635.94/66,242
  6. Step 6: Final answer
    x = 49,717.83

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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.