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Finding the Fourth Proportional to 78,484.80, 117,727.20 and 34,132.80

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Solution

The fourth proportional to 78,484.80, 117,727.20 and 34,132.80 is: 51,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,484.80 : 117,727.20 = 34,132.80 : x
  2. Step 2: Convert to fraction form
    78,484.80/117,727.20 = 34,132.80/x
  3. Step 3: Cross multiply
    78,484.80x = 117,727.20 × 34,132.80
  4. Step 4: Simplify right side
    78,484.80x = 4,018,358,972.16
  5. Step 5: Solve for x
    x = 4,018,358,972.16/78,484.80
  6. Step 6: Final answer
    x = 51,199.20

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