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Finding the Fourth Proportional to 71,381.20, 107,071.80 and 38,203.60

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Solution

The fourth proportional to 71,381.20, 107,071.80 and 38,203.60 is: 57,305.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,381.20 : 107,071.80 = 38,203.60 : x
  2. Step 2: Convert to fraction form
    71,381.20/107,071.80 = 38,203.60/x
  3. Step 3: Cross multiply
    71,381.20x = 107,071.80 × 38,203.60
  4. Step 4: Simplify right side
    71,381.20x = 4,090,528,218.48
  5. Step 5: Solve for x
    x = 4,090,528,218.48/71,381.20
  6. Step 6: Final answer
    x = 57,305.40

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