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Finding the Fourth Proportional to 66,644.65, 91,972.09 and 36,432.02

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Solution

The fourth proportional to 66,644.65, 91,972.09 and 36,432.02 is: 50,277.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644.65 : 91,972.09 = 36,432.02 : x
  2. Step 2: Convert to fraction form
    66,644.65/91,972.09 = 36,432.02/x
  3. Step 3: Cross multiply
    66,644.65x = 91,972.09 × 36,432.02
  4. Step 4: Simplify right side
    66,644.65x = 3,350,729,297.79
  5. Step 5: Solve for x
    x = 3,350,729,297.79/66,644.65
  6. Step 6: Final answer
    x = 50,277.54

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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.