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Finding the Fourth Proportional to 68,609.38, 102,747.98 and 47,490.25

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Solution

The fourth proportional to 68,609.38, 102,747.98 and 47,490.25 is: 71,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,609.38 : 102,747.98 = 47,490.25 : x
  2. Step 2: Convert to fraction form
    68,609.38/102,747.98 = 47,490.25/x
  3. Step 3: Cross multiply
    68,609.38x = 102,747.98 × 47,490.25
  4. Step 4: Simplify right side
    68,609.38x = 4,879,527,148.18
  5. Step 5: Solve for x
    x = 4,879,527,148.18/68,609.38
  6. Step 6: Final answer
    x = 71,120.41

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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.