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Finding the Fourth Proportional to 52,979.74, 79,395.72 and 39,816.70

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Solution

The fourth proportional to 52,979.74, 79,395.72 and 39,816.70 is: 59,669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,979.74 : 79,395.72 = 39,816.70 : x
  2. Step 2: Convert to fraction form
    52,979.74/79,395.72 = 39,816.70/x
  3. Step 3: Cross multiply
    52,979.74x = 79,395.72 × 39,816.70
  4. Step 4: Simplify right side
    52,979.74x = 3,161,275,564.52
  5. Step 5: Solve for x
    x = 3,161,275,564.52/52,979.74
  6. Step 6: Final answer
    x = 59,669.52

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