Finding the Fourth Proportional to 87,879.44, 121,274.07 and 47,593.28
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Solution
The fourth proportional to 87,879.44, 121,274.07 and 47,593.28 is: 65,678.97
Step by Step Solution
- Step 1: Write the proportion equation
87,879.44 : 121,274.07 = 47,593.28 : x - Step 2: Convert to fraction form
87,879.44/121,274.07 = 47,593.28/x - Step 3: Cross multiply
87,879.44x = 121,274.07 × 47,593.28 - Step 4: Simplify right side
87,879.44x = 5,771,830,770.25 - Step 5: Solve for x
x = 5,771,830,770.25/87,879.44 - Step 6: Final answer
x = 65,678.97
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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.