Finding the Fourth Proportional to 91,077.39, 125,721.38 and 68,481.99
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Solution
The fourth proportional to 91,077.39, 125,721.38 and 68,481.99 is: 94,531.15
Step by Step Solution
- Step 1: Write the proportion equation
91,077.39 : 125,721.38 = 68,481.99 : x - Step 2: Convert to fraction form
91,077.39/125,721.38 = 68,481.99/x - Step 3: Cross multiply
91,077.39x = 125,721.38 × 68,481.99 - Step 4: Simplify right side
91,077.39x = 8,609,650,459.15 - Step 5: Solve for x
x = 8,609,650,459.15/91,077.39 - Step 6: Final answer
x = 94,531.15
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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.