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Finding the Fourth Proportional to 66,568.49, 91,865.25 and 36,354.70

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Solution

The fourth proportional to 66,568.49, 91,865.25 and 36,354.70 is: 50,169.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,568.49 : 91,865.25 = 36,354.70 : x
  2. Step 2: Convert to fraction form
    66,568.49/91,865.25 = 36,354.70/x
  3. Step 3: Cross multiply
    66,568.49x = 91,865.25 × 36,354.70
  4. Step 4: Simplify right side
    66,568.49x = 3,339,733,484.55
  5. Step 5: Solve for x
    x = 3,339,733,484.55/66,568.49
  6. Step 6: Final answer
    x = 50,169.89

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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.