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Finding the Fourth Proportional to 65,940.72, 91,029.63 and 37,640.94

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Solution

The fourth proportional to 65,940.72, 91,029.63 and 37,640.94 is: 51,962.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,940.72 : 91,029.63 = 37,640.94 : x
  2. Step 2: Convert to fraction form
    65,940.72/91,029.63 = 37,640.94/x
  3. Step 3: Cross multiply
    65,940.72x = 91,029.63 × 37,640.94
  4. Step 4: Simplify right side
    65,940.72x = 3,426,440,841.05
  5. Step 5: Solve for x
    x = 3,426,440,841.05/65,940.72
  6. Step 6: Final answer
    x = 51,962.44

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