Finding the Fourth Proportional to 81,738.72, 122,610.51 and 22,578.75
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Solution
The fourth proportional to 81,738.72, 122,610.51 and 22,578.75 is: 33,868.80
Step by Step Solution
- Step 1: Write the proportion equation
81,738.72 : 122,610.51 = 22,578.75 : x - Step 2: Convert to fraction form
81,738.72/122,610.51 = 22,578.75/x - Step 3: Cross multiply
81,738.72x = 122,610.51 × 22,578.75 - Step 4: Simplify right side
81,738.72x = 2,768,392,052.66 - Step 5: Solve for x
x = 2,768,392,052.66/81,738.72 - Step 6: Final answer
x = 33,868.80
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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.