Finding the Fourth Proportional to 86,396.18, 129,301.65 and 53,137.31
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Solution
The fourth proportional to 86,396.18, 129,301.65 and 53,137.31 is: 79,525.99
Step by Step Solution
- Step 1: Write the proportion equation
86,396.18 : 129,301.65 = 53,137.31 : x - Step 2: Convert to fraction form
86,396.18/129,301.65 = 53,137.31/x - Step 3: Cross multiply
86,396.18x = 129,301.65 × 53,137.31 - Step 4: Simplify right side
86,396.18x = 6,870,741,213.05 - Step 5: Solve for x
x = 6,870,741,213.05/86,396.18 - Step 6: Final answer
x = 79,525.99
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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.