Finding the Fourth Proportional to 81,633.75, 122,413.68 and 29,044.62
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Solution
The fourth proportional to 81,633.75, 122,413.68 and 29,044.62 is: 43,553.79
Step by Step Solution
- Step 1: Write the proportion equation
81,633.75 : 122,413.68 = 29,044.62 : x - Step 2: Convert to fraction form
81,633.75/122,413.68 = 29,044.62/x - Step 3: Cross multiply
81,633.75x = 122,413.68 × 29,044.62 - Step 4: Simplify right side
81,633.75x = 3,555,458,818.40 - Step 5: Solve for x
x = 3,555,458,818.40/81,633.75 - Step 6: Final answer
x = 43,553.79
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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.