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Finding the Fourth Proportional to 66,836.25, 92,234.05 and 39,979.89

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Solution

The fourth proportional to 66,836.25, 92,234.05 and 39,979.89 is: 55,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,836.25 : 92,234.05 = 39,979.89 : x
  2. Step 2: Convert to fraction form
    66,836.25/92,234.05 = 39,979.89/x
  3. Step 3: Cross multiply
    66,836.25x = 92,234.05 × 39,979.89
  4. Step 4: Simplify right side
    66,836.25x = 3,687,506,973.36
  5. Step 5: Solve for x
    x = 3,687,506,973.36/66,836.25
  6. Step 6: Final answer
    x = 55,172.26

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