Finding the Fourth Proportional to 73,687.09, 110,438.20 and 31,517.68
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Solution
The fourth proportional to 73,687.09, 110,438.20 and 31,517.68 is: 47,236.98
Step by Step Solution
- Step 1: Write the proportion equation
73,687.09 : 110,438.20 = 31,517.68 : x - Step 2: Convert to fraction form
73,687.09/110,438.20 = 31,517.68/x - Step 3: Cross multiply
73,687.09x = 110,438.20 × 31,517.68 - Step 4: Simplify right side
73,687.09x = 3,480,755,847.38 - Step 5: Solve for x
x = 3,480,755,847.38/73,687.09 - Step 6: Final answer
x = 47,236.98
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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.