Finding the Fourth Proportional to 71,215,021.29, 106,807,584.94 and 20,085,082.68
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Solution
The fourth proportional to 71,215,021.29, 106,807,584.94 and 20,085,082.68 is: 30,123,408.45
Step by Step Solution
- Step 1: Write the proportion equation
71,215,021.29 : 106,807,584.94 = 20,085,082.68 : x - Step 2: Convert to fraction form
71,215,021.29/106,807,584.94 = 20,085,082.68/x - Step 3: Cross multiply
71,215,021.29x = 106,807,584.94 × 20,085,082.68 - Step 4: Simplify right side
71,215,021.29x = 2,145,239,174,371,022.75 - Step 5: Solve for x
x = 2,145,239,174,371,022.75/71,215,021.29 - Step 6: Final answer
x = 30,123,408.45
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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.