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Finding the Fourth Proportional to 86,456.67, 129,696.35 and 33,859.32

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Solution

The fourth proportional to 86,456.67, 129,696.35 and 33,859.32 is: 50,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,456.67 : 129,696.35 = 33,859.32 : x
  2. Step 2: Convert to fraction form
    86,456.67/129,696.35 = 33,859.32/x
  3. Step 3: Cross multiply
    86,456.67x = 129,696.35 × 33,859.32
  4. Step 4: Simplify right side
    86,456.67x = 4,391,429,399.70
  5. Step 5: Solve for x
    x = 4,391,429,399.70/86,456.67
  6. Step 6: Final answer
    x = 50,793.42

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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.