Finding the Fourth Proportional to 100,647.31, 138,896.47 and 57,626.99
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Solution
The fourth proportional to 100,647.31, 138,896.47 and 57,626.99 is: 79,527.08
Step by Step Solution
- Step 1: Write the proportion equation
100,647.31 : 138,896.47 = 57,626.99 : x - Step 2: Convert to fraction form
100,647.31/138,896.47 = 57,626.99/x - Step 3: Cross multiply
100,647.31x = 138,896.47 × 57,626.99 - Step 4: Simplify right side
100,647.31x = 8,004,186,167.43 - Step 5: Solve for x
x = 8,004,186,167.43/100,647.31 - Step 6: Final answer
x = 79,527.08
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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.