Finding the Fourth Proportional to 76,755.80, 115,125.68 and 20,601.92
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Solution
The fourth proportional to 76,755.80, 115,125.68 and 20,601.92 is: 30,900.73
Step by Step Solution
- Step 1: Write the proportion equation
76,755.80 : 115,125.68 = 20,601.92 : x - Step 2: Convert to fraction form
76,755.80/115,125.68 = 20,601.92/x - Step 3: Cross multiply
76,755.80x = 115,125.68 × 20,601.92 - Step 4: Simplify right side
76,755.80x = 2,371,810,049.31 - Step 5: Solve for x
x = 2,371,810,049.31/76,755.80 - Step 6: Final answer
x = 30,900.73
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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.