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Finding the Fourth Proportional to 66,622.52, 91,936.32 and 36,408.84

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Solution

The fourth proportional to 66,622.52, 91,936.32 and 36,408.84 is: 50,242.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,622.52 : 91,936.32 = 36,408.84 : x
  2. Step 2: Convert to fraction form
    66,622.52/91,936.32 = 36,408.84/x
  3. Step 3: Cross multiply
    66,622.52x = 91,936.32 × 36,408.84
  4. Step 4: Simplify right side
    66,622.52x = 3,347,294,765.07
  5. Step 5: Solve for x
    x = 3,347,294,765.07/66,622.52
  6. Step 6: Final answer
    x = 50,242.70

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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.