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Finding the Fourth Proportional to 77,812.64, 116,709.22 and 21,656.96

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Solution

The fourth proportional to 77,812.64, 116,709.22 and 21,656.96 is: 32,482.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.64 : 116,709.22 = 21,656.96 : x
  2. Step 2: Convert to fraction form
    77,812.64/116,709.22 = 21,656.96/x
  3. Step 3: Cross multiply
    77,812.64x = 116,709.22 × 21,656.96
  4. Step 4: Simplify right side
    77,812.64x = 2,527,566,909.17
  5. Step 5: Solve for x
    x = 2,527,566,909.17/77,812.64
  6. Step 6: Final answer
    x = 32,482.73

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