Finding the Fourth Proportional to 94,161.70, 129,943.92 and 51,721.18
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Solution
The fourth proportional to 94,161.70, 129,943.92 and 51,721.18 is: 71,375.65
Step by Step Solution
- Step 1: Write the proportion equation
94,161.70 : 129,943.92 = 51,721.18 : x - Step 2: Convert to fraction form
94,161.70/129,943.92 = 51,721.18/x - Step 3: Cross multiply
94,161.70x = 129,943.92 × 51,721.18 - Step 4: Simplify right side
94,161.70x = 6,720,852,876.23 - Step 5: Solve for x
x = 6,720,852,876.23/94,161.70 - Step 6: Final answer
x = 71,375.65
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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.