Finding the Fourth Proportional to 69,993.11, 104,974.11 and 20,072.99
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Solution
The fourth proportional to 69,993.11, 104,974.11 and 20,072.99 is: 30,105.02
Step by Step Solution
- Step 1: Write the proportion equation
69,993.11 : 104,974.11 = 20,072.99 : x - Step 2: Convert to fraction form
69,993.11/104,974.11 = 20,072.99/x - Step 3: Cross multiply
69,993.11x = 104,974.11 × 20,072.99 - Step 4: Simplify right side
69,993.11x = 2,107,143,735.42 - Step 5: Solve for x
x = 2,107,143,735.42/69,993.11 - Step 6: Final answer
x = 30,105.02
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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.