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Finding the Fourth Proportional to 66,711.27, 100,066.91 and 16,791.80

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Solution

The fourth proportional to 66,711.27, 100,066.91 and 16,791.80 is: 25,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,711.27 : 100,066.91 = 16,791.80 : x
  2. Step 2: Convert to fraction form
    66,711.27/100,066.91 = 16,791.80/x
  3. Step 3: Cross multiply
    66,711.27x = 100,066.91 × 16,791.80
  4. Step 4: Simplify right side
    66,711.27x = 1,680,303,867.49
  5. Step 5: Solve for x
    x = 1,680,303,867.49/66,711.27
  6. Step 6: Final answer
    x = 25,187.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.