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Finding the Fourth Proportional to 70,421.64, 105,561.38 and 44,144.84

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Solution

The fourth proportional to 70,421.64, 105,561.38 and 44,144.84 is: 66,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,421.64 : 105,561.38 = 44,144.84 : x
  2. Step 2: Convert to fraction form
    70,421.64/105,561.38 = 44,144.84/x
  3. Step 3: Cross multiply
    70,421.64x = 105,561.38 × 44,144.84
  4. Step 4: Simplify right side
    70,421.64x = 4,659,990,230.28
  5. Step 5: Solve for x
    x = 4,659,990,230.28/70,421.64
  6. Step 6: Final answer
    x = 66,172.70

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