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Finding the Fourth Proportional to 66,459, 91,713.42 and 36,651

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Solution

The fourth proportional to 66,459, 91,713.42 and 36,651 is: 50,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459 : 91,713.42 = 36,651 : x
  2. Step 2: Convert to fraction form
    66,459/91,713.42 = 36,651/x
  3. Step 3: Cross multiply
    66,459x = 91,713.42 × 36,651
  4. Step 4: Simplify right side
    66,459x = 3,361,388,556.42
  5. Step 5: Solve for x
    x = 3,361,388,556.42/66,459
  6. Step 6: Final answer
    x = 50,578.38

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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.