Finding the Fourth Proportional to 79,721.82, 119,589.62 and 20,556.99
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Solution
The fourth proportional to 79,721.82, 119,589.62 and 20,556.99 is: 30,837.26
Step by Step Solution
- Step 1: Write the proportion equation
79,721.82 : 119,589.62 = 20,556.99 : x - Step 2: Convert to fraction form
79,721.82/119,589.62 = 20,556.99/x - Step 3: Cross multiply
79,721.82x = 119,589.62 × 20,556.99 - Step 4: Simplify right side
79,721.82x = 2,458,402,519.66 - Step 5: Solve for x
x = 2,458,402,519.66/79,721.82 - Step 6: Final answer
x = 30,837.26
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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.