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Finding the Fourth Proportional to 86,361.39, 129,579.62 and 30,241.76

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Solution

The fourth proportional to 86,361.39, 129,579.62 and 30,241.76 is: 45,375.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,361.39 : 129,579.62 = 30,241.76 : x
  2. Step 2: Convert to fraction form
    86,361.39/129,579.62 = 30,241.76/x
  3. Step 3: Cross multiply
    86,361.39x = 129,579.62 × 30,241.76
  4. Step 4: Simplify right side
    86,361.39x = 3,918,714,969.82
  5. Step 5: Solve for x
    x = 3,918,714,969.82/86,361.39
  6. Step 6: Final answer
    x = 45,375.77

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