Finding the Fourth Proportional to 87,916.11, 121,324.26 and 47,630.15
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Solution
The fourth proportional to 87,916.11, 121,324.26 and 47,630.15 is: 65,729.62
Step by Step Solution
- Step 1: Write the proportion equation
87,916.11 : 121,324.26 = 47,630.15 : x - Step 2: Convert to fraction form
87,916.11/121,324.26 = 47,630.15/x - Step 3: Cross multiply
87,916.11x = 121,324.26 × 47,630.15 - Step 4: Simplify right side
87,916.11x = 5,778,692,702.44 - Step 5: Solve for x
x = 5,778,692,702.44/87,916.11 - Step 6: Final answer
x = 65,729.62
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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.