Finding the Fourth Proportional to 87,771.84, 131,731.60 and 82,235.99
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Solution
The fourth proportional to 87,771.84, 131,731.60 and 82,235.99 is: 123,423.17
Step by Step Solution
- Step 1: Write the proportion equation
87,771.84 : 131,731.60 = 82,235.99 : x - Step 2: Convert to fraction form
87,771.84/131,731.60 = 82,235.99/x - Step 3: Cross multiply
87,771.84x = 131,731.60 × 82,235.99 - Step 4: Simplify right side
87,771.84x = 10,833,078,540.28 - Step 5: Solve for x
x = 10,833,078,540.28/87,771.84 - Step 6: Final answer
x = 123,423.17
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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.