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Finding the Fourth Proportional to 79,945.70, 119,855.29 and 30,020.24

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Solution

The fourth proportional to 79,945.70, 119,855.29 and 30,020.24 is: 45,006.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,945.70 : 119,855.29 = 30,020.24 : x
  2. Step 2: Convert to fraction form
    79,945.70/119,855.29 = 30,020.24/x
  3. Step 3: Cross multiply
    79,945.70x = 119,855.29 × 30,020.24
  4. Step 4: Simplify right side
    79,945.70x = 3,598,084,571.07
  5. Step 5: Solve for x
    x = 3,598,084,571.07/79,945.70
  6. Step 6: Final answer
    x = 45,006.61

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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.