Finding the Fourth Proportional to 81,814.09, 122,654.79 and 36,802.49
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Solution
The fourth proportional to 81,814.09, 122,654.79 and 36,802.49 is: 55,173.89
Step by Step Solution
- Step 1: Write the proportion equation
81,814.09 : 122,654.79 = 36,802.49 : x - Step 2: Convert to fraction form
81,814.09/122,654.79 = 36,802.49/x - Step 3: Cross multiply
81,814.09x = 122,654.79 × 36,802.49 - Step 4: Simplify right side
81,814.09x = 4,514,001,682.43 - Step 5: Solve for x
x = 4,514,001,682.43/81,814.09 - Step 6: Final answer
x = 55,173.89
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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.