Finding the Fourth Proportional to 74,142.26, 102,315.81 and 40,149.97
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Solution
The fourth proportional to 74,142.26, 102,315.81 and 40,149.97 is: 55,406.68
Step by Step Solution
- Step 1: Write the proportion equation
74,142.26 : 102,315.81 = 40,149.97 : x - Step 2: Convert to fraction form
74,142.26/102,315.81 = 40,149.97/x - Step 3: Cross multiply
74,142.26x = 102,315.81 × 40,149.97 - Step 4: Simplify right side
74,142.26x = 4,107,975,989.70 - Step 5: Solve for x
x = 4,107,975,989.70/74,142.26 - Step 6: Final answer
x = 55,406.68
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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.