Finding the Fourth Proportional to 84,169.28, 126,265.92 and 27,990.88
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Solution
The fourth proportional to 84,169.28, 126,265.92 and 27,990.88 is: 41,990.31
Step by Step Solution
- Step 1: Write the proportion equation
84,169.28 : 126,265.92 = 27,990.88 : x - Step 2: Convert to fraction form
84,169.28/126,265.92 = 27,990.88/x - Step 3: Cross multiply
84,169.28x = 126,265.92 × 27,990.88 - Step 4: Simplify right side
84,169.28x = 3,534,294,214.81 - Step 5: Solve for x
x = 3,534,294,214.81/84,169.28 - Step 6: Final answer
x = 41,990.31
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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.