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Finding the Fourth Proportional to 68,163.50, 102,245.26 and 31,227.50

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Solution

The fourth proportional to 68,163.50, 102,245.26 and 31,227.50 is: 46,841.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,163.50 : 102,245.26 = 31,227.50 : x
  2. Step 2: Convert to fraction form
    68,163.50/102,245.26 = 31,227.50/x
  3. Step 3: Cross multiply
    68,163.50x = 102,245.26 × 31,227.50
  4. Step 4: Simplify right side
    68,163.50x = 3,192,863,856.65
  5. Step 5: Solve for x
    x = 3,192,863,856.65/68,163.50
  6. Step 6: Final answer
    x = 46,841.25

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1.5x scale

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.