Finding the Fourth Proportional to 74,120.70, 102,286.44 and 40,129.41
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Solution
The fourth proportional to 74,120.70, 102,286.44 and 40,129.41 is: 55,378.52
Step by Step Solution
- Step 1: Write the proportion equation
74,120.70 : 102,286.44 = 40,129.41 : x - Step 2: Convert to fraction form
74,120.70/102,286.44 = 40,129.41/x - Step 3: Cross multiply
74,120.70x = 102,286.44 × 40,129.41 - Step 4: Simplify right side
74,120.70x = 4,104,694,488.20 - Step 5: Solve for x
x = 4,104,694,488.20/74,120.70 - Step 6: Final answer
x = 55,378.52
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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.