Finding the Fourth Proportional to 88,183.79, 121,691.97 and 49,942.78
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Solution
The fourth proportional to 88,183.79, 121,691.97 and 49,942.78 is: 68,920.09
Step by Step Solution
- Step 1: Write the proportion equation
88,183.79 : 121,691.97 = 49,942.78 : x - Step 2: Convert to fraction form
88,183.79/121,691.97 = 49,942.78/x - Step 3: Cross multiply
88,183.79x = 121,691.97 × 49,942.78 - Step 4: Simplify right side
88,183.79x = 6,077,634,981.25 - Step 5: Solve for x
x = 6,077,634,981.25/88,183.79 - Step 6: Final answer
x = 68,920.09
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1.5x scale
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.