Finding the Fourth Proportional to 81,998.29, 122,891.83 and 39,796.70
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Solution
The fourth proportional to 81,998.29, 122,891.83 and 39,796.70 is: 59,643.80
Step by Step Solution
- Step 1: Write the proportion equation
81,998.29 : 122,891.83 = 39,796.70 : x - Step 2: Convert to fraction form
81,998.29/122,891.83 = 39,796.70/x - Step 3: Cross multiply
81,998.29x = 122,891.83 × 39,796.70 - Step 4: Simplify right side
81,998.29x = 4,890,689,290.96 - Step 5: Solve for x
x = 4,890,689,290.96/81,998.29 - Step 6: Final answer
x = 59,643.80
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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.