Finding the Fourth Proportional to 71,539.92, 107,415.21 and 40,011.75
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Solution
The fourth proportional to 71,539.92, 107,415.21 and 40,011.75 is: 60,076.54
Step by Step Solution
- Step 1: Write the proportion equation
71,539.92 : 107,415.21 = 40,011.75 : x - Step 2: Convert to fraction form
71,539.92/107,415.21 = 40,011.75/x - Step 3: Cross multiply
71,539.92x = 107,415.21 × 40,011.75 - Step 4: Simplify right side
71,539.92x = 4,297,870,528.72 - Step 5: Solve for x
x = 4,297,870,528.72/71,539.92 - Step 6: Final answer
x = 60,076.54
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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.