Finding the Fourth Proportional to 81,832.80, 122,731.44 and 29,245.92
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Solution
The fourth proportional to 81,832.80, 122,731.44 and 29,245.92 is: 43,862.53
Step by Step Solution
- Step 1: Write the proportion equation
81,832.80 : 122,731.44 = 29,245.92 : x - Step 2: Convert to fraction form
81,832.80/122,731.44 = 29,245.92/x - Step 3: Cross multiply
81,832.80x = 122,731.44 × 29,245.92 - Step 4: Simplify right side
81,832.80x = 3,589,393,875.72 - Step 5: Solve for x
x = 3,589,393,875.72/81,832.80 - Step 6: Final answer
x = 43,862.53
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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.