Finding the Fourth Proportional to 87,930.92, 121,344.82 and 47,644.68
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Solution
The fourth proportional to 87,930.92, 121,344.82 and 47,644.68 is: 65,749.74
Step by Step Solution
- Step 1: Write the proportion equation
87,930.92 : 121,344.82 = 47,644.68 : x - Step 2: Convert to fraction form
87,930.92/121,344.82 = 47,644.68/x - Step 3: Cross multiply
87,930.92x = 121,344.82 × 47,644.68 - Step 4: Simplify right side
87,930.92x = 5,781,435,118.56 - Step 5: Solve for x
x = 5,781,435,118.56/87,930.92 - Step 6: Final answer
x = 65,749.74
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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.