Finding the Fourth Proportional to 76,932.63, 115,394.76 and 20,771.96
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Solution
The fourth proportional to 76,932.63, 115,394.76 and 20,771.96 is: 31,156.80
Step by Step Solution
- Step 1: Write the proportion equation
76,932.63 : 115,394.76 = 20,771.96 : x - Step 2: Convert to fraction form
76,932.63/115,394.76 = 20,771.96/x - Step 3: Cross multiply
76,932.63x = 115,394.76 × 20,771.96 - Step 4: Simplify right side
76,932.63x = 2,396,974,761.96 - Step 5: Solve for x
x = 2,396,974,761.96/76,932.63 - Step 6: Final answer
x = 31,156.80
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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.