Finding the Fourth Proportional to 87,420.44, 120,639.90 and 49,694.68
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Solution
The fourth proportional to 87,420.44, 120,639.90 and 49,694.68 is: 68,578.48
Step by Step Solution
- Step 1: Write the proportion equation
87,420.44 : 120,639.90 = 49,694.68 : x - Step 2: Convert to fraction form
87,420.44/120,639.90 = 49,694.68/x - Step 3: Cross multiply
87,420.44x = 120,639.90 × 49,694.68 - Step 4: Simplify right side
87,420.44x = 5,995,161,225.73 - Step 5: Solve for x
x = 5,995,161,225.73/87,420.44 - Step 6: Final answer
x = 68,578.48
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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.