Finding the Fourth Proportional to 76,786.80, 115,172.64 and 26,857.68
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Solution
The fourth proportional to 76,786.80, 115,172.64 and 26,857.68 is: 40,283.88
Step by Step Solution
- Step 1: Write the proportion equation
76,786.80 : 115,172.64 = 26,857.68 : x - Step 2: Convert to fraction form
76,786.80/115,172.64 = 26,857.68/x - Step 3: Cross multiply
76,786.80x = 115,172.64 × 26,857.68 - Step 4: Simplify right side
76,786.80x = 3,093,269,909.88 - Step 5: Solve for x
x = 3,093,269,909.88/76,786.80 - Step 6: Final answer
x = 40,283.88
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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.