Finding the Fourth Proportional to 79,909.11, 119,917.13 and 33,161.99
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Solution
The fourth proportional to 79,909.11, 119,917.13 and 33,161.99 is: 49,765.16
Step by Step Solution
- Step 1: Write the proportion equation
79,909.11 : 119,917.13 = 33,161.99 : x - Step 2: Convert to fraction form
79,909.11/119,917.13 = 33,161.99/x - Step 3: Cross multiply
79,909.11x = 119,917.13 × 33,161.99 - Step 4: Simplify right side
79,909.11x = 3,976,689,900.49 - Step 5: Solve for x
x = 3,976,689,900.49/79,909.11 - Step 6: Final answer
x = 49,765.16
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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.