Home / 68,739.20-102,979.20-35,345.60

Finding the Fourth Proportional to 68,739.20, 102,979.20 and 35,345.60

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Solution

The fourth proportional to 68,739.20, 102,979.20 and 35,345.60 is: 52,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,739.20 : 102,979.20 = 35,345.60 : x
  2. Step 2: Convert to fraction form
    68,739.20/102,979.20 = 35,345.60/x
  3. Step 3: Cross multiply
    68,739.20x = 102,979.20 × 35,345.60
  4. Step 4: Simplify right side
    68,739.20x = 3,639,861,611.52
  5. Step 5: Solve for x
    x = 3,639,861,611.52/68,739.20
  6. Step 6: Final answer
    x = 52,951.76

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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.