Finding the Fourth Proportional to 107,728.75, 161,610.63 and 31,834.99
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Solution
The fourth proportional to 107,728.75, 161,610.63 and 31,834.99 is: 47,757.66
Step by Step Solution
- Step 1: Write the proportion equation
107,728.75 : 161,610.63 = 31,834.99 : x - Step 2: Convert to fraction form
107,728.75/161,610.63 = 31,834.99/x - Step 3: Cross multiply
107,728.75x = 161,610.63 × 31,834.99 - Step 4: Simplify right side
107,728.75x = 5,144,872,789.94 - Step 5: Solve for x
x = 5,144,872,789.94/107,728.75 - Step 6: Final answer
x = 47,757.66
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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.