Finding the Fourth Proportional to 73,891.20, 110,851.20 and 31,771.20
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Solution
The fourth proportional to 73,891.20, 110,851.20 and 31,771.20 is: 47,662.99
Step by Step Solution
- Step 1: Write the proportion equation
73,891.20 : 110,851.20 = 31,771.20 : x - Step 2: Convert to fraction form
73,891.20/110,851.20 = 31,771.20/x - Step 3: Cross multiply
73,891.20x = 110,851.20 × 31,771.20 - Step 4: Simplify right side
73,891.20x = 3,521,875,645.44 - Step 5: Solve for x
x = 3,521,875,645.44/73,891.20 - Step 6: Final answer
x = 47,662.99
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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.