Finding the Fourth Proportional to 87,442.12, 120,670.14 and 49,718.68
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Solution
The fourth proportional to 87,442.12, 120,670.14 and 49,718.68 is: 68,611.79
Step by Step Solution
- Step 1: Write the proportion equation
87,442.12 : 120,670.14 = 49,718.68 : x - Step 2: Convert to fraction form
87,442.12/120,670.14 = 49,718.68/x - Step 3: Cross multiply
87,442.12x = 120,670.14 × 49,718.68 - Step 4: Simplify right side
87,442.12x = 5,999,560,076.22 - Step 5: Solve for x
x = 5,999,560,076.22/87,442.12 - Step 6: Final answer
x = 68,611.79
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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.