Finding the Fourth Proportional to 87,778.49, 121,134.26 and 49,546.09
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Solution
The fourth proportional to 87,778.49, 121,134.26 and 49,546.09 is: 68,373.56
Step by Step Solution
- Step 1: Write the proportion equation
87,778.49 : 121,134.26 = 49,546.09 : x - Step 2: Convert to fraction form
87,778.49/121,134.26 = 49,546.09/x - Step 3: Cross multiply
87,778.49x = 121,134.26 × 49,546.09 - Step 4: Simplify right side
87,778.49x = 6,001,728,397.48 - Step 5: Solve for x
x = 6,001,728,397.48/87,778.49 - Step 6: Final answer
x = 68,373.56
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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.