Finding the Fourth Proportional to 87,757.13, 121,105.16 and 47,471.09
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Solution
The fourth proportional to 87,757.13, 121,105.16 and 47,471.09 is: 65,510.27
Step by Step Solution
- Step 1: Write the proportion equation
87,757.13 : 121,105.16 = 47,471.09 : x - Step 2: Convert to fraction form
87,757.13/121,105.16 = 47,471.09/x - Step 3: Cross multiply
87,757.13x = 121,105.16 × 47,471.09 - Step 4: Simplify right side
87,757.13x = 5,748,993,106.94 - Step 5: Solve for x
x = 5,748,993,106.94/87,757.13 - Step 6: Final answer
x = 65,510.27
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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.