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Finding the Fourth Proportional to 68,512.92, 102,767.88 and 31,576.92

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Solution

The fourth proportional to 68,512.92, 102,767.88 and 31,576.92 is: 47,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,512.92 : 102,767.88 = 31,576.92 : x
  2. Step 2: Convert to fraction form
    68,512.92/102,767.88 = 31,576.92/x
  3. Step 3: Cross multiply
    68,512.92x = 102,767.88 × 31,576.92
  4. Step 4: Simplify right side
    68,512.92x = 3,245,093,125.33
  5. Step 5: Solve for x
    x = 3,245,093,125.33/68,512.92
  6. Step 6: Final answer
    x = 47,364.69

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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.