Finding the Fourth Proportional to 76,788.80, 115,175.64 and 26,859.68
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Solution
The fourth proportional to 76,788.80, 115,175.64 and 26,859.68 is: 40,286.88
Step by Step Solution
- Step 1: Write the proportion equation
76,788.80 : 115,175.64 = 26,859.68 : x - Step 2: Convert to fraction form
76,788.80/115,175.64 = 26,859.68/x - Step 3: Cross multiply
76,788.80x = 115,175.64 × 26,859.68 - Step 4: Simplify right side
76,788.80x = 3,093,580,834.20 - Step 5: Solve for x
x = 3,093,580,834.20/76,788.80 - Step 6: Final answer
x = 40,286.88
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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.