Finding the Fourth Proportional to 87,721.08, 121,056.36 and 49,482.42
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Solution
The fourth proportional to 87,721.08, 121,056.36 and 49,482.42 is: 68,286.46
Step by Step Solution
- Step 1: Write the proportion equation
87,721.08 : 121,056.36 = 49,482.42 : x - Step 2: Convert to fraction form
87,721.08/121,056.36 = 49,482.42/x - Step 3: Cross multiply
87,721.08x = 121,056.36 × 49,482.42 - Step 4: Simplify right side
87,721.08x = 5,990,161,649.19 - Step 5: Solve for x
x = 5,990,161,649.19/87,721.08 - Step 6: Final answer
x = 68,286.46
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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.