Finding the Fourth Proportional to 71,912.26, 107,868.30 and 19,321.75
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Solution
The fourth proportional to 71,912.26, 107,868.30 and 19,321.75 is: 28,982.60
Step by Step Solution
- Step 1: Write the proportion equation
71,912.26 : 107,868.30 = 19,321.75 : x - Step 2: Convert to fraction form
71,912.26/107,868.30 = 19,321.75/x - Step 3: Cross multiply
71,912.26x = 107,868.30 × 19,321.75 - Step 4: Simplify right side
71,912.26x = 2,084,204,325.53 - Step 5: Solve for x
x = 2,084,204,325.53/71,912.26 - Step 6: Final answer
x = 28,982.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.