Finding the Fourth Proportional to 87,236.56, 120,387.12 and 49,511.68
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Solution
The fourth proportional to 87,236.56, 120,387.12 and 49,511.68 is: 68,326.50
Step by Step Solution
- Step 1: Write the proportion equation
87,236.56 : 120,387.12 = 49,511.68 : x - Step 2: Convert to fraction form
87,236.56/120,387.12 = 49,511.68/x - Step 3: Cross multiply
87,236.56x = 120,387.12 × 49,511.68 - Step 4: Simplify right side
87,236.56x = 5,960,568,561.56 - Step 5: Solve for x
x = 5,960,568,561.56/87,236.56 - Step 6: Final answer
x = 68,326.50
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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.