Finding the Fourth Proportional to 81,372.63, 122,194.35 and 54,889.09
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Solution
The fourth proportional to 81,372.63, 122,194.35 and 54,889.09 is: 82,424.97
Step by Step Solution
- Step 1: Write the proportion equation
81,372.63 : 122,194.35 = 54,889.09 : x - Step 2: Convert to fraction form
81,372.63/122,194.35 = 54,889.09/x - Step 3: Cross multiply
81,372.63x = 122,194.35 × 54,889.09 - Step 4: Simplify right side
81,372.63x = 6,707,136,476.21 - Step 5: Solve for x
x = 6,707,136,476.21/81,372.63 - Step 6: Final answer
x = 82,424.97
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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.