Finding the Fourth Proportional to 86,618.23, 129,939.67 and 26,651.68
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Solution
The fourth proportional to 86,618.23, 129,939.67 and 26,651.68 is: 39,981.31
Step by Step Solution
- Step 1: Write the proportion equation
86,618.23 : 129,939.67 = 26,651.68 : x - Step 2: Convert to fraction form
86,618.23/129,939.67 = 26,651.68/x - Step 3: Cross multiply
86,618.23x = 129,939.67 × 26,651.68 - Step 4: Simplify right side
86,618.23x = 3,463,110,370.89 - Step 5: Solve for x
x = 3,463,110,370.89/86,618.23 - Step 6: Final answer
x = 39,981.31
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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.