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Finding the Fourth Proportional to 66,286.98, 91,474.92 and 36,071.52

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Solution

The fourth proportional to 66,286.98, 91,474.92 and 36,071.52 is: 49,778.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,286.98 : 91,474.92 = 36,071.52 : x
  2. Step 2: Convert to fraction form
    66,286.98/91,474.92 = 36,071.52/x
  3. Step 3: Cross multiply
    66,286.98x = 91,474.92 × 36,071.52
  4. Step 4: Simplify right side
    66,286.98x = 3,299,639,406.28
  5. Step 5: Solve for x
    x = 3,299,639,406.28/66,286.98
  6. Step 6: Final answer
    x = 49,778.09

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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.