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Finding the Fourth Proportional to 71,712.95, 98,962.46 and 39,881.16

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Solution

The fourth proportional to 71,712.95, 98,962.46 and 39,881.16 is: 55,035.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,712.95 : 98,962.46 = 39,881.16 : x
  2. Step 2: Convert to fraction form
    71,712.95/98,962.46 = 39,881.16/x
  3. Step 3: Cross multiply
    71,712.95x = 98,962.46 × 39,881.16
  4. Step 4: Simplify right side
    71,712.95x = 3,946,737,651.40
  5. Step 5: Solve for x
    x = 3,946,737,651.40/71,712.95
  6. Step 6: Final answer
    x = 55,035.22

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