Finding the Fourth Proportional to 87,716.40, 131,720.40 and 48,301.80
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Solution
The fourth proportional to 87,716.40, 131,720.40 and 48,301.80 is: 72,532.99
Step by Step Solution
- Step 1: Write the proportion equation
87,716.40 : 131,720.40 = 48,301.80 : x - Step 2: Convert to fraction form
87,716.40/131,720.40 = 48,301.80/x - Step 3: Cross multiply
87,716.40x = 131,720.40 × 48,301.80 - Step 4: Simplify right side
87,716.40x = 6,362,332,416.72 - Step 5: Solve for x
x = 6,362,332,416.72/87,716.40 - Step 6: Final answer
x = 72,532.99
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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.