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Finding the Fourth Proportional to 71,694.99, 98,933.67 and 39,861.18

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Solution

The fourth proportional to 71,694.99, 98,933.67 and 39,861.18 is: 55,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,694.99 : 98,933.67 = 39,861.18 : x
  2. Step 2: Convert to fraction form
    71,694.99/98,933.67 = 39,861.18/x
  3. Step 3: Cross multiply
    71,694.99x = 98,933.67 × 39,861.18
  4. Step 4: Simplify right side
    71,694.99x = 3,943,612,827.93
  5. Step 5: Solve for x
    x = 3,943,612,827.93/71,694.99
  6. Step 6: Final answer
    x = 55,005.42

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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.