Finding the Fourth Proportional to 81,786.08, 122,679.12 and 22,621.80
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Solution
The fourth proportional to 81,786.08, 122,679.12 and 22,621.80 is: 33,932.70
Step by Step Solution
- Step 1: Write the proportion equation
81,786.08 : 122,679.12 = 22,621.80 : x - Step 2: Convert to fraction form
81,786.08/122,679.12 = 22,621.80/x - Step 3: Cross multiply
81,786.08x = 122,679.12 × 22,621.80 - Step 4: Simplify right side
81,786.08x = 2,775,222,516.82 - Step 5: Solve for x
x = 2,775,222,516.82/81,786.08 - Step 6: Final answer
x = 33,932.70
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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.