Finding the Fourth Proportional to 87,427.40, 120,649.28 and 49,701.68
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Solution
The fourth proportional to 87,427.40, 120,649.28 and 49,701.68 is: 68,588.02
Step by Step Solution
- Step 1: Write the proportion equation
87,427.40 : 120,649.28 = 49,701.68 : x - Step 2: Convert to fraction form
87,427.40/120,649.28 = 49,701.68/x - Step 3: Cross multiply
87,427.40x = 120,649.28 × 49,701.68 - Step 4: Simplify right side
87,427.40x = 5,996,471,906.79 - Step 5: Solve for x
x = 5,996,471,906.79/87,427.40 - Step 6: Final answer
x = 68,588.02
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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.