Finding the Fourth Proportional to 74,515.70, 102,790.68 and 47,241.92
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Solution
The fourth proportional to 74,515.70, 102,790.68 and 47,241.92 is: 65,167.87
Step by Step Solution
- Step 1: Write the proportion equation
74,515.70 : 102,790.68 = 47,241.92 : x - Step 2: Convert to fraction form
74,515.70/102,790.68 = 47,241.92/x - Step 3: Cross multiply
74,515.70x = 102,790.68 × 47,241.92 - Step 4: Simplify right side
74,515.70x = 4,856,029,081.31 - Step 5: Solve for x
x = 4,856,029,081.31/74,515.70 - Step 6: Final answer
x = 65,167.87
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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.