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Finding the Fourth Proportional to 66,958.28, 100,476.36 and 30,022.28

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Solution

The fourth proportional to 66,958.28, 100,476.36 and 30,022.28 is: 45,050.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,958.28 : 100,476.36 = 30,022.28 : x
  2. Step 2: Convert to fraction form
    66,958.28/100,476.36 = 30,022.28/x
  3. Step 3: Cross multiply
    66,958.28x = 100,476.36 × 30,022.28
  4. Step 4: Simplify right side
    66,958.28x = 3,016,529,413.30
  5. Step 5: Solve for x
    x = 3,016,529,413.30/66,958.28
  6. Step 6: Final answer
    x = 45,050.88

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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.