Finding the Fourth Proportional to 88,336.62, 121,949.69 and 68,148.18
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Solution
The fourth proportional to 88,336.62, 121,949.69 and 68,148.18 is: 94,079.32
Step by Step Solution
- Step 1: Write the proportion equation
88,336.62 : 121,949.69 = 68,148.18 : x - Step 2: Convert to fraction form
88,336.62/121,949.69 = 68,148.18/x - Step 3: Cross multiply
88,336.62x = 121,949.69 × 68,148.18 - Step 4: Simplify right side
88,336.62x = 8,310,649,084.32 - Step 5: Solve for x
x = 8,310,649,084.32/88,336.62 - Step 6: Final answer
x = 94,079.32
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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.