Finding the Fourth Proportional to 107,687.56, 161,431.50 and 47,684.08
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Solution
The fourth proportional to 107,687.56, 161,431.50 and 47,684.08 is: 71,481.90
Step by Step Solution
- Step 1: Write the proportion equation
107,687.56 : 161,431.50 = 47,684.08 : x - Step 2: Convert to fraction form
107,687.56/161,431.50 = 47,684.08/x - Step 3: Cross multiply
107,687.56x = 161,431.50 × 47,684.08 - Step 4: Simplify right side
107,687.56x = 7,697,711,514.94 - Step 5: Solve for x
x = 7,697,711,514.94/107,687.56 - Step 6: Final answer
x = 71,481.90
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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.