Finding the Fourth Proportional to 74,361.97, 102,620.75 and 40,370.46
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Solution
The fourth proportional to 74,361.97, 102,620.75 and 40,370.46 is: 55,711.90
Step by Step Solution
- Step 1: Write the proportion equation
74,361.97 : 102,620.75 = 40,370.46 : x - Step 2: Convert to fraction form
74,361.97/102,620.75 = 40,370.46/x - Step 3: Cross multiply
74,361.97x = 102,620.75 × 40,370.46 - Step 4: Simplify right side
74,361.97x = 4,142,846,883.05 - Step 5: Solve for x
x = 4,142,846,883.05/74,361.97 - Step 6: Final answer
x = 55,711.90
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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.