Finding the Fourth Proportional to 81,228.62, 121,761.09 and 33,869.95
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Solution
The fourth proportional to 81,228.62, 121,761.09 and 33,869.95 is: 50,770.79
Step by Step Solution
- Step 1: Write the proportion equation
81,228.62 : 121,761.09 = 33,869.95 : x - Step 2: Convert to fraction form
81,228.62/121,761.09 = 33,869.95/x - Step 3: Cross multiply
81,228.62x = 121,761.09 × 33,869.95 - Step 4: Simplify right side
81,228.62x = 4,124,041,725.84 - Step 5: Solve for x
x = 4,124,041,725.84/81,228.62 - Step 6: Final answer
x = 50,770.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.