Finding the Fourth Proportional to 74,351.26, 111,545.79 and 21,043.18
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Solution
The fourth proportional to 74,351.26, 111,545.79 and 21,043.18 is: 31,570.12
Step by Step Solution
- Step 1: Write the proportion equation
74,351.26 : 111,545.79 = 21,043.18 : x - Step 2: Convert to fraction form
74,351.26/111,545.79 = 21,043.18/x - Step 3: Cross multiply
74,351.26x = 111,545.79 × 21,043.18 - Step 4: Simplify right side
74,351.26x = 2,347,278,137.21 - Step 5: Solve for x
x = 2,347,278,137.21/74,351.26 - Step 6: Final answer
x = 31,570.12
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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.