Finding the Fourth Proportional to 75,138.09, 103,690.51 and 41,604.09
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Solution
The fourth proportional to 75,138.09, 103,690.51 and 41,604.09 is: 57,413.61
Step by Step Solution
- Step 1: Write the proportion equation
75,138.09 : 103,690.51 = 41,604.09 : x - Step 2: Convert to fraction form
75,138.09/103,690.51 = 41,604.09/x - Step 3: Cross multiply
75,138.09x = 103,690.51 × 41,604.09 - Step 4: Simplify right side
75,138.09x = 4,313,949,310.19 - Step 5: Solve for x
x = 4,313,949,310.19/75,138.09 - Step 6: Final answer
x = 57,413.61
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.