Finding the Fourth Proportional to 72,872.75, 100,608.14 and 47,765.99
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Solution
The fourth proportional to 72,872.75, 100,608.14 and 47,765.99 is: 65,945.74
Step by Step Solution
- Step 1: Write the proportion equation
72,872.75 : 100,608.14 = 47,765.99 : x - Step 2: Convert to fraction form
72,872.75/100,608.14 = 47,765.99/x - Step 3: Cross multiply
72,872.75x = 100,608.14 × 47,765.99 - Step 4: Simplify right side
72,872.75x = 4,805,647,170.33 - Step 5: Solve for x
x = 4,805,647,170.33/72,872.75 - Step 6: Final answer
x = 65,945.74
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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.