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Finding the Fourth Proportional to 86,313.84, 129,485.94 and 35,712.72

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Solution

The fourth proportional to 86,313.84, 129,485.94 and 35,712.72 is: 53,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,313.84 : 129,485.94 = 35,712.72 : x
  2. Step 2: Convert to fraction form
    86,313.84/129,485.94 = 35,712.72/x
  3. Step 3: Cross multiply
    86,313.84x = 129,485.94 × 35,712.72
  4. Step 4: Simplify right side
    86,313.84x = 4,624,295,119.16
  5. Step 5: Solve for x
    x = 4,624,295,119.16/86,313.84
  6. Step 6: Final answer
    x = 53,575.36

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