Finding the Fourth Proportional to 81,007.44, 121,405.14 and 43,523.70
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Solution
The fourth proportional to 81,007.44, 121,405.14 and 43,523.70 is: 65,228.59
Step by Step Solution
- Step 1: Write the proportion equation
81,007.44 : 121,405.14 = 43,523.70 : x - Step 2: Convert to fraction form
81,007.44/121,405.14 = 43,523.70/x - Step 3: Cross multiply
81,007.44x = 121,405.14 × 43,523.70 - Step 4: Simplify right side
81,007.44x = 5,284,000,891.82 - Step 5: Solve for x
x = 5,284,000,891.82/81,007.44 - Step 6: Final answer
x = 65,228.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.