Finding the Fourth Proportional to 87,855.80, 121,260.94 and 68,697.68
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Solution
The fourth proportional to 87,855.80, 121,260.94 and 68,697.68 is: 94,818.39
Step by Step Solution
- Step 1: Write the proportion equation
87,855.80 : 121,260.94 = 68,697.68 : x - Step 2: Convert to fraction form
87,855.80/121,260.94 = 68,697.68/x - Step 3: Cross multiply
87,855.80x = 121,260.94 × 68,697.68 - Step 4: Simplify right side
87,855.80x = 8,330,345,252.62 - Step 5: Solve for x
x = 8,330,345,252.62/87,855.80 - Step 6: Final answer
x = 94,818.39
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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.