Finding the Fourth Proportional to 87,906.36, 121,311.35 and 47,620.12
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Solution
The fourth proportional to 87,906.36, 121,311.35 and 47,620.12 is: 65,716.08
Step by Step Solution
- Step 1: Write the proportion equation
87,906.36 : 121,311.35 = 47,620.12 : x - Step 2: Convert to fraction form
87,906.36/121,311.35 = 47,620.12/x - Step 3: Cross multiply
87,906.36x = 121,311.35 × 47,620.12 - Step 4: Simplify right side
87,906.36x = 5,776,861,044.36 - Step 5: Solve for x
x = 5,776,861,044.36/87,906.36 - Step 6: Final answer
x = 65,716.08
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.