Finding the Fourth Proportional to 87,138.28, 120,243.84 and 48,892.66
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Solution
The fourth proportional to 87,138.28, 120,243.84 and 48,892.66 is: 67,467.96
Step by Step Solution
- Step 1: Write the proportion equation
87,138.28 : 120,243.84 = 48,892.66 : x - Step 2: Convert to fraction form
87,138.28/120,243.84 = 48,892.66/x - Step 3: Cross multiply
87,138.28x = 120,243.84 × 48,892.66 - Step 4: Simplify right side
87,138.28x = 5,879,041,653.65 - Step 5: Solve for x
x = 5,879,041,653.65/87,138.28 - Step 6: Final answer
x = 67,467.96
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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.