Finding the Fourth Proportional to 87,951.63, 121,373.69 and 47,665.39
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Solution
The fourth proportional to 87,951.63, 121,373.69 and 47,665.39 is: 65,778.48
Step by Step Solution
- Step 1: Write the proportion equation
87,951.63 : 121,373.69 = 47,665.39 : x - Step 2: Convert to fraction form
87,951.63/121,373.69 = 47,665.39/x - Step 3: Cross multiply
87,951.63x = 121,373.69 × 47,665.39 - Step 4: Simplify right side
87,951.63x = 5,785,324,486.41 - Step 5: Solve for x
x = 5,785,324,486.41/87,951.63 - Step 6: Final answer
x = 65,778.48
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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.