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Finding the Fourth Proportional to 79,729.75, 119,668.43 and 40,314.54

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Solution

The fourth proportional to 79,729.75, 119,668.43 and 40,314.54 is: 60,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,729.75 : 119,668.43 = 40,314.54 : x
  2. Step 2: Convert to fraction form
    79,729.75/119,668.43 = 40,314.54/x
  3. Step 3: Cross multiply
    79,729.75x = 119,668.43 × 40,314.54
  4. Step 4: Simplify right side
    79,729.75x = 4,824,377,707.97
  5. Step 5: Solve for x
    x = 4,824,377,707.97/79,729.75
  6. Step 6: Final answer
    x = 60,509.13

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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.