Finding the Fourth Proportional to 82,708.20, 124,062.30 and 74,413.80
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Solution
The fourth proportional to 82,708.20, 124,062.30 and 74,413.80 is: 111,620.70
Step by Step Solution
- Step 1: Write the proportion equation
82,708.20 : 124,062.30 = 74,413.80 : x - Step 2: Convert to fraction form
82,708.20/124,062.30 = 74,413.80/x - Step 3: Cross multiply
82,708.20x = 124,062.30 × 74,413.80 - Step 4: Simplify right side
82,708.20x = 9,231,947,179.74 - Step 5: Solve for x
x = 9,231,947,179.74/82,708.20 - Step 6: Final answer
x = 111,620.70
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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.