Finding the Fourth Proportional to 81,709.92, 122,534.64 and 29,105.44
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Solution
The fourth proportional to 81,709.92, 122,534.64 and 29,105.44 is: 43,647.39
Step by Step Solution
- Step 1: Write the proportion equation
81,709.92 : 122,534.64 = 29,105.44 : x - Step 2: Convert to fraction form
81,709.92/122,534.64 = 29,105.44/x - Step 3: Cross multiply
81,709.92x = 122,534.64 × 29,105.44 - Step 4: Simplify right side
81,709.92x = 3,566,424,612.44 - Step 5: Solve for x
x = 3,566,424,612.44/81,709.92 - Step 6: Final answer
x = 43,647.39
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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.