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Finding the Fourth Proportional to 66,887.69, 100,251.56 and 50,969.06

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Solution

The fourth proportional to 66,887.69, 100,251.56 and 50,969.06 is: 76,392.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,887.69 : 100,251.56 = 50,969.06 : x
  2. Step 2: Convert to fraction form
    66,887.69/100,251.56 = 50,969.06/x
  3. Step 3: Cross multiply
    66,887.69x = 100,251.56 × 50,969.06
  4. Step 4: Simplify right side
    66,887.69x = 5,109,727,778.84
  5. Step 5: Solve for x
    x = 5,109,727,778.84/66,887.69
  6. Step 6: Final answer
    x = 76,392.65

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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.