Finding the Fourth Proportional to 76,789.77, 115,184.19 and 19,863.68
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Solution
The fourth proportional to 76,789.77, 115,184.19 and 19,863.68 is: 29,795.39
Step by Step Solution
- Step 1: Write the proportion equation
76,789.77 : 115,184.19 = 19,863.68 : x - Step 2: Convert to fraction form
76,789.77/115,184.19 = 19,863.68/x - Step 3: Cross multiply
76,789.77x = 115,184.19 × 19,863.68 - Step 4: Simplify right side
76,789.77x = 2,287,981,315.30 - Step 5: Solve for x
x = 2,287,981,315.30/76,789.77 - Step 6: Final answer
x = 29,795.39
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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.