Home / 78,629.28-117,879.12-52,268.64

Finding the Fourth Proportional to 78,629.28, 117,879.12 and 52,268.64

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Solution

The fourth proportional to 78,629.28, 117,879.12 and 52,268.64 is: 78,359.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,629.28 : 117,879.12 = 52,268.64 : x
  2. Step 2: Convert to fraction form
    78,629.28/117,879.12 = 52,268.64/x
  3. Step 3: Cross multiply
    78,629.28x = 117,879.12 × 52,268.64
  4. Step 4: Simplify right side
    78,629.28x = 6,161,381,286.80
  5. Step 5: Solve for x
    x = 6,161,381,286.80/78,629.28
  6. Step 6: Final answer
    x = 78,359.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.