Finding the Fourth Proportional to 81,866.44, 122,799.66 and 54,157.96
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Solution
The fourth proportional to 81,866.44, 122,799.66 and 54,157.96 is: 81,236.94
Step by Step Solution
- Step 1: Write the proportion equation
81,866.44 : 122,799.66 = 54,157.96 : x - Step 2: Convert to fraction form
81,866.44/122,799.66 = 54,157.96/x - Step 3: Cross multiply
81,866.44x = 122,799.66 × 54,157.96 - Step 4: Simplify right side
81,866.44x = 6,650,579,074.29 - Step 5: Solve for x
x = 6,650,579,074.29/81,866.44 - Step 6: Final answer
x = 81,236.94
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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.