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Finding the Fourth Proportional to 70,120.86, 105,103.38 and 53,425.85

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Solution

The fourth proportional to 70,120.86, 105,103.38 and 53,425.85 is: 80,079.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,120.86 : 105,103.38 = 53,425.85 : x
  2. Step 2: Convert to fraction form
    70,120.86/105,103.38 = 53,425.85/x
  3. Step 3: Cross multiply
    70,120.86x = 105,103.38 × 53,425.85
  4. Step 4: Simplify right side
    70,120.86x = 5,615,237,082.65
  5. Step 5: Solve for x
    x = 5,615,237,082.65/70,120.86
  6. Step 6: Final answer
    x = 80,079.41

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