Finding the Fourth Proportional to 74,436.75, 102,724.34 and 40,902.75
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Solution
The fourth proportional to 74,436.75, 102,724.34 and 40,902.75 is: 56,446.69
Step by Step Solution
- Step 1: Write the proportion equation
74,436.75 : 102,724.34 = 40,902.75 : x - Step 2: Convert to fraction form
74,436.75/102,724.34 = 40,902.75/x - Step 3: Cross multiply
74,436.75x = 102,724.34 × 40,902.75 - Step 4: Simplify right side
74,436.75x = 4,201,707,997.94 - Step 5: Solve for x
x = 4,201,707,997.94/74,436.75 - Step 6: Final answer
x = 56,446.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.