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Finding the Fourth Proportional to 51,217.22, 76,823.07 and 15,678.54

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Solution

The fourth proportional to 51,217.22, 76,823.07 and 15,678.54 is: 23,516.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,217.22 : 76,823.07 = 15,678.54 : x
  2. Step 2: Convert to fraction form
    51,217.22/76,823.07 = 15,678.54/x
  3. Step 3: Cross multiply
    51,217.22x = 76,823.07 × 15,678.54
  4. Step 4: Simplify right side
    51,217.22x = 1,204,473,575.92
  5. Step 5: Solve for x
    x = 1,204,473,575.92/51,217.22
  6. Step 6: Final answer
    x = 23,516.97

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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.