Finding the Fourth Proportional to 87,748.70, 131,639.45 and 35,162.28
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Solution
The fourth proportional to 87,748.70, 131,639.45 and 35,162.28 is: 52,749.99
Step by Step Solution
- Step 1: Write the proportion equation
87,748.70 : 131,639.45 = 35,162.28 : x - Step 2: Convert to fraction form
87,748.70/131,639.45 = 35,162.28/x - Step 3: Cross multiply
87,748.70x = 131,639.45 × 35,162.28 - Step 4: Simplify right side
87,748.70x = 4,628,743,024.13 - Step 5: Solve for x
x = 4,628,743,024.13/87,748.70 - Step 6: Final answer
x = 52,749.99
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1.5x scale
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.