Finding the Fourth Proportional to 86,344.44, 129,479.64 and 30,167.70
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Solution
The fourth proportional to 86,344.44, 129,479.64 and 30,167.70 is: 45,238.62
Step by Step Solution
- Step 1: Write the proportion equation
86,344.44 : 129,479.64 = 30,167.70 : x - Step 2: Convert to fraction form
86,344.44/129,479.64 = 30,167.70/x - Step 3: Cross multiply
86,344.44x = 129,479.64 × 30,167.70 - Step 4: Simplify right side
86,344.44x = 3,906,102,935.63 - Step 5: Solve for x
x = 3,906,102,935.63/86,344.44 - Step 6: Final answer
x = 45,238.62
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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.