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Finding the Fourth Proportional to 109,999.70, 164,999.55 and 39,881.30

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Solution

The fourth proportional to 109,999.70, 164,999.55 and 39,881.30 is: 59,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,999.70 : 164,999.55 = 39,881.30 : x
  2. Step 2: Convert to fraction form
    109,999.70/164,999.55 = 39,881.30/x
  3. Step 3: Cross multiply
    109,999.70x = 164,999.55 × 39,881.30
  4. Step 4: Simplify right side
    109,999.70x = 6,580,396,553.42
  5. Step 5: Solve for x
    x = 6,580,396,553.42/109,999.70
  6. Step 6: Final answer
    x = 59,821.95

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