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Finding the Fourth Proportional to 76,653.70, 114,986.32 and 20,492.60

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Solution

The fourth proportional to 76,653.70, 114,986.32 and 20,492.60 is: 30,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,653.70 : 114,986.32 = 20,492.60 : x
  2. Step 2: Convert to fraction form
    76,653.70/114,986.32 = 20,492.60/x
  3. Step 3: Cross multiply
    76,653.70x = 114,986.32 × 20,492.60
  4. Step 4: Simplify right side
    76,653.70x = 2,356,368,035.07
  5. Step 5: Solve for x
    x = 2,356,368,035.07/76,653.70
  6. Step 6: Final answer
    x = 30,740.44

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