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Finding the Fourth Proportional to 69,980.70, 104,939.46 and 20,049.37

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Solution

The fourth proportional to 69,980.70, 104,939.46 and 20,049.37 is: 30,065.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,980.70 : 104,939.46 = 20,049.37 : x
  2. Step 2: Convert to fraction form
    69,980.70/104,939.46 = 20,049.37/x
  3. Step 3: Cross multiply
    69,980.70x = 104,939.46 × 20,049.37
  4. Step 4: Simplify right side
    69,980.70x = 2,103,969,798.79
  5. Step 5: Solve for x
    x = 2,103,969,798.79/69,980.70
  6. Step 6: Final answer
    x = 30,065.00

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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.