Finding the Fourth Proportional to 78,265.44, 117,391.68 and 25,678.08
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Solution
The fourth proportional to 78,265.44, 117,391.68 and 25,678.08 is: 38,514.99
Step by Step Solution
- Step 1: Write the proportion equation
78,265.44 : 117,391.68 = 25,678.08 : x - Step 2: Convert to fraction form
78,265.44/117,391.68 = 25,678.08/x - Step 3: Cross multiply
78,265.44x = 117,391.68 × 25,678.08 - Step 4: Simplify right side
78,265.44x = 3,014,392,950.37 - Step 5: Solve for x
x = 3,014,392,950.37/78,265.44 - Step 6: Final answer
x = 38,514.99
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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.