Finding the Fourth Proportional to 81,942.19, 122,914.09 and 22,782.48
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Solution
The fourth proportional to 81,942.19, 122,914.09 and 22,782.48 is: 34,173.94
Step by Step Solution
- Step 1: Write the proportion equation
81,942.19 : 122,914.09 = 22,782.48 : x - Step 2: Convert to fraction form
81,942.19/122,914.09 = 22,782.48/x - Step 3: Cross multiply
81,942.19x = 122,914.09 × 22,782.48 - Step 4: Simplify right side
81,942.19x = 2,800,287,797.14 - Step 5: Solve for x
x = 2,800,287,797.14/81,942.19 - Step 6: Final answer
x = 34,173.94
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1.5x scale
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.