Finding the Fourth Proportional to 120,531.62, 180,879.12 and 49,467.08
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Solution
The fourth proportional to 120,531.62, 180,879.12 and 49,467.08 is: 74,234.15
Step by Step Solution
- Step 1: Write the proportion equation
120,531.62 : 180,879.12 = 49,467.08 : x - Step 2: Convert to fraction form
120,531.62/180,879.12 = 49,467.08/x - Step 3: Cross multiply
120,531.62x = 180,879.12 × 49,467.08 - Step 4: Simplify right side
120,531.62x = 8,947,562,351.57 - Step 5: Solve for x
x = 8,947,562,351.57/120,531.62 - Step 6: Final answer
x = 74,234.15
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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.