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Finding the Fourth Proportional to 103,978.24, 155,967.31 and 40,828.07

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Solution

The fourth proportional to 103,978.24, 155,967.31 and 40,828.07 is: 61,242.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,978.24 : 155,967.31 = 40,828.07 : x
  2. Step 2: Convert to fraction form
    103,978.24/155,967.31 = 40,828.07/x
  3. Step 3: Cross multiply
    103,978.24x = 155,967.31 × 40,828.07
  4. Step 4: Simplify right side
    103,978.24x = 6,367,844,691.35
  5. Step 5: Solve for x
    x = 6,367,844,691.35/103,978.24
  6. Step 6: Final answer
    x = 61,242.09

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