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Finding the Fourth Proportional to 66,244, 91,418.16 and 36,436

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Solution

The fourth proportional to 66,244, 91,418.16 and 36,436 is: 50,282.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,244 : 91,418.16 = 36,436 : x
  2. Step 2: Convert to fraction form
    66,244/91,418.16 = 36,436/x
  3. Step 3: Cross multiply
    66,244x = 91,418.16 × 36,436
  4. Step 4: Simplify right side
    66,244x = 3,330,912,077.76
  5. Step 5: Solve for x
    x = 3,330,912,077.76/66,244
  6. Step 6: Final answer
    x = 50,282.47

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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.