Finding the Fourth Proportional to 112,217.25, 154,863.05 and 61,919.49
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Solution
The fourth proportional to 112,217.25, 154,863.05 and 61,919.49 is: 85,450.68
Step by Step Solution
- Step 1: Write the proportion equation
112,217.25 : 154,863.05 = 61,919.49 : x - Step 2: Convert to fraction form
112,217.25/154,863.05 = 61,919.49/x - Step 3: Cross multiply
112,217.25x = 154,863.05 × 61,919.49 - Step 4: Simplify right side
112,217.25x = 9,589,040,766.25 - Step 5: Solve for x
x = 9,589,040,766.25/112,217.25 - Step 6: Final answer
x = 85,450.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.