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Finding the Fourth Proportional to 66,960.27, 100,437.53 and 20,211.75

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Solution

The fourth proportional to 66,960.27, 100,437.53 and 20,211.75 is: 30,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960.27 : 100,437.53 = 20,211.75 : x
  2. Step 2: Convert to fraction form
    66,960.27/100,437.53 = 20,211.75/x
  3. Step 3: Cross multiply
    66,960.27x = 100,437.53 × 20,211.75
  4. Step 4: Simplify right side
    66,960.27x = 2,030,018,145.92
  5. Step 5: Solve for x
    x = 2,030,018,145.92/66,960.27
  6. Step 6: Final answer
    x = 30,316.76

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