Finding the Fourth Proportional to 81,021.38, 121,574.75 and 41,578.49
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Solution
The fourth proportional to 81,021.38, 121,574.75 and 41,578.49 is: 62,389.63
Step by Step Solution
- Step 1: Write the proportion equation
81,021.38 : 121,574.75 = 41,578.49 : x - Step 2: Convert to fraction form
81,021.38/121,574.75 = 41,578.49/x - Step 3: Cross multiply
81,021.38x = 121,574.75 × 41,578.49 - Step 4: Simplify right side
81,021.38x = 5,054,894,319.24 - Step 5: Solve for x
x = 5,054,894,319.24/81,021.38 - Step 6: Final answer
x = 62,389.63
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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.