Finding the Fourth Proportional to 87,891.38, 121,297.61 and 49,657.99
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Solution
The fourth proportional to 87,891.38, 121,297.61 and 49,657.99 is: 68,532.27
Step by Step Solution
- Step 1: Write the proportion equation
87,891.38 : 121,297.61 = 49,657.99 : x - Step 2: Convert to fraction form
87,891.38/121,297.61 = 49,657.99/x - Step 3: Cross multiply
87,891.38x = 121,297.61 × 49,657.99 - Step 4: Simplify right side
87,891.38x = 6,023,395,504.40 - Step 5: Solve for x
x = 6,023,395,504.40/87,891.38 - Step 6: Final answer
x = 68,532.27
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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.