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Finding the Fourth Proportional to 68,958.69, 103,354.43 and 31,467.39

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Solution

The fourth proportional to 68,958.69, 103,354.43 and 31,467.39 is: 47,162.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,958.69 : 103,354.43 = 31,467.39 : x
  2. Step 2: Convert to fraction form
    68,958.69/103,354.43 = 31,467.39/x
  3. Step 3: Cross multiply
    68,958.69x = 103,354.43 × 31,467.39
  4. Step 4: Simplify right side
    68,958.69x = 3,252,293,999.70
  5. Step 5: Solve for x
    x = 3,252,293,999.70/68,958.69
  6. Step 6: Final answer
    x = 47,162.93

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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.