Finding the Fourth Proportional to 76,851.92, 115,283.82 and 29,489.68
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Solution
The fourth proportional to 76,851.92, 115,283.82 and 29,489.68 is: 44,236.80
Step by Step Solution
- Step 1: Write the proportion equation
76,851.92 : 115,283.82 = 29,489.68 : x - Step 2: Convert to fraction form
76,851.92/115,283.82 = 29,489.68/x - Step 3: Cross multiply
76,851.92x = 115,283.82 × 29,489.68 - Step 4: Simplify right side
76,851.92x = 3,399,682,960.98 - Step 5: Solve for x
x = 3,399,682,960.98/76,851.92 - Step 6: Final answer
x = 44,236.80
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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.