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Finding the Fourth Proportional to 68,978.32, 103,412.05 and 38,974.04

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Solution

The fourth proportional to 68,978.32, 103,412.05 and 38,974.04 is: 58,429.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,978.32 : 103,412.05 = 38,974.04 : x
  2. Step 2: Convert to fraction form
    68,978.32/103,412.05 = 38,974.04/x
  3. Step 3: Cross multiply
    68,978.32x = 103,412.05 × 38,974.04
  4. Step 4: Simplify right side
    68,978.32x = 4,030,385,373.18
  5. Step 5: Solve for x
    x = 4,030,385,373.18/68,978.32
  6. Step 6: Final answer
    x = 58,429.74

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