Finding the Fourth Proportional to 81,939.36, 122,919.84 and 29,354.88
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Solution
The fourth proportional to 81,939.36, 122,919.84 and 29,354.88 is: 44,036.19
Step by Step Solution
- Step 1: Write the proportion equation
81,939.36 : 122,919.84 = 29,354.88 : x - Step 2: Convert to fraction form
81,939.36/122,919.84 = 29,354.88/x - Step 3: Cross multiply
81,939.36x = 122,919.84 × 29,354.88 - Step 4: Simplify right side
81,939.36x = 3,608,297,152.82 - Step 5: Solve for x
x = 3,608,297,152.82/81,939.36 - Step 6: Final answer
x = 44,036.19
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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.