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Finding the Fourth Proportional to 66,400, 91,632 and 36,592

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Solution

The fourth proportional to 66,400, 91,632 and 36,592 is: 50,496.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400 : 91,632 = 36,592 : x
  2. Step 2: Convert to fraction form
    66,400/91,632 = 36,592/x
  3. Step 3: Cross multiply
    66,400x = 91,632 × 36,592
  4. Step 4: Simplify right side
    66,400x = 3,352,998,144
  5. Step 5: Solve for x
    x = 3,352,998,144/66,400
  6. Step 6: Final answer
    x = 50,496.96

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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.