Finding the Fourth Proportional to 71,608.80, 107,413.20 and 65,047.80
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Solution
The fourth proportional to 71,608.80, 107,413.20 and 65,047.80 is: 97,571.70
Step by Step Solution
- Step 1: Write the proportion equation
71,608.80 : 107,413.20 = 65,047.80 : x - Step 2: Convert to fraction form
71,608.80/107,413.20 = 65,047.80/x - Step 3: Cross multiply
71,608.80x = 107,413.20 × 65,047.80 - Step 4: Simplify right side
71,608.80x = 6,986,992,350.96 - Step 5: Solve for x
x = 6,986,992,350.96/71,608.80 - Step 6: Final answer
x = 97,571.70
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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.