Finding the Fourth Proportional to 81,619.88, 112,635.90 and 47,651.99
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Solution
The fourth proportional to 81,619.88, 112,635.90 and 47,651.99 is: 65,760.02
Step by Step Solution
- Step 1: Write the proportion equation
81,619.88 : 112,635.90 = 47,651.99 : x - Step 2: Convert to fraction form
81,619.88/112,635.90 = 47,651.99/x - Step 3: Cross multiply
81,619.88x = 112,635.90 × 47,651.99 - Step 4: Simplify right side
81,619.88x = 5,367,324,217.26 - Step 5: Solve for x
x = 5,367,324,217.26/81,619.88 - Step 6: Final answer
x = 65,760.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.