Finding the Fourth Proportional to 87,839.37, 121,217.49 and 47,552.09
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Solution
The fourth proportional to 87,839.37, 121,217.49 and 47,552.09 is: 65,621.42
Step by Step Solution
- Step 1: Write the proportion equation
87,839.37 : 121,217.49 = 47,552.09 : x - Step 2: Convert to fraction form
87,839.37/121,217.49 = 47,552.09/x - Step 3: Cross multiply
87,839.37x = 121,217.49 × 47,552.09 - Step 4: Simplify right side
87,839.37x = 5,764,144,387.97 - Step 5: Solve for x
x = 5,764,144,387.97/87,839.37 - Step 6: Final answer
x = 65,621.42
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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.