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Finding the Fourth Proportional to 86,958.66, 119,734.26 and 67,915.38

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Solution

The fourth proportional to 86,958.66, 119,734.26 and 67,915.38 is: 93,513.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,958.66 : 119,734.26 = 67,915.38 : x
  2. Step 2: Convert to fraction form
    86,958.66/119,734.26 = 67,915.38/x
  3. Step 3: Cross multiply
    86,958.66x = 119,734.26 × 67,915.38
  4. Step 4: Simplify right side
    86,958.66x = 8,131,797,766.92
  5. Step 5: Solve for x
    x = 8,131,797,766.92/86,958.66
  6. Step 6: Final answer
    x = 93,513.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.