Finding the Fourth Proportional to 87,884.19, 131,770.41 and 74,561.79
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Solution
The fourth proportional to 87,884.19, 131,770.41 and 74,561.79 is: 111,795.28
Step by Step Solution
- Step 1: Write the proportion equation
87,884.19 : 131,770.41 = 74,561.79 : x - Step 2: Convert to fraction form
87,884.19/131,770.41 = 74,561.79/x - Step 3: Cross multiply
87,884.19x = 131,770.41 × 74,561.79 - Step 4: Simplify right side
87,884.19x = 9,825,037,638.63 - Step 5: Solve for x
x = 9,825,037,638.63/87,884.19 - Step 6: Final answer
x = 111,795.28
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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.