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Finding the Fourth Proportional to 66,651.71, 91,979.60 and 36,437.39

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Solution

The fourth proportional to 66,651.71, 91,979.60 and 36,437.39 is: 50,283.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,651.71 : 91,979.60 = 36,437.39 : x
  2. Step 2: Convert to fraction form
    66,651.71/91,979.60 = 36,437.39/x
  3. Step 3: Cross multiply
    66,651.71x = 91,979.60 × 36,437.39
  4. Step 4: Simplify right side
    66,651.71x = 3,351,496,982.43
  5. Step 5: Solve for x
    x = 3,351,496,982.43/66,651.71
  6. Step 6: Final answer
    x = 50,283.74

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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.