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Finding the Fourth Proportional to 69,786.28, 104,676.99 and 30,343.47

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Solution

The fourth proportional to 69,786.28, 104,676.99 and 30,343.47 is: 45,514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,786.28 : 104,676.99 = 30,343.47 : x
  2. Step 2: Convert to fraction form
    69,786.28/104,676.99 = 30,343.47/x
  3. Step 3: Cross multiply
    69,786.28x = 104,676.99 × 30,343.47
  4. Step 4: Simplify right side
    69,786.28x = 3,176,263,105.76
  5. Step 5: Solve for x
    x = 3,176,263,105.76/69,786.28
  6. Step 6: Final answer
    x = 45,514.15

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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.