Finding the Fourth Proportional to 81,147.26, 121,721.79 and 24,986.92
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Solution
The fourth proportional to 81,147.26, 121,721.79 and 24,986.92 is: 37,480.66
Step by Step Solution
- Step 1: Write the proportion equation
81,147.26 : 121,721.79 = 24,986.92 : x - Step 2: Convert to fraction form
81,147.26/121,721.79 = 24,986.92/x - Step 3: Cross multiply
81,147.26x = 121,721.79 × 24,986.92 - Step 4: Simplify right side
81,147.26x = 3,041,452,628.99 - Step 5: Solve for x
x = 3,041,452,628.99/81,147.26 - Step 6: Final answer
x = 37,480.66
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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.