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Finding the Fourth Proportional to 66,202.26, 91,360.89 and 35,989.61

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Solution

The fourth proportional to 66,202.26, 91,360.89 and 35,989.61 is: 49,666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,202.26 : 91,360.89 = 35,989.61 : x
  2. Step 2: Convert to fraction form
    66,202.26/91,360.89 = 35,989.61/x
  3. Step 3: Cross multiply
    66,202.26x = 91,360.89 × 35,989.61
  4. Step 4: Simplify right side
    66,202.26x = 3,288,042,343.55
  5. Step 5: Solve for x
    x = 3,288,042,343.55/66,202.26
  6. Step 6: Final answer
    x = 49,666.62

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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.