Finding the Fourth Proportional to 80,745.63, 121,138.44 and 38,657.70
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Solution
The fourth proportional to 80,745.63, 121,138.44 and 38,657.70 is: 57,996.12
Step by Step Solution
- Step 1: Write the proportion equation
80,745.63 : 121,138.44 = 38,657.70 : x - Step 2: Convert to fraction form
80,745.63/121,138.44 = 38,657.70/x - Step 3: Cross multiply
80,745.63x = 121,138.44 × 38,657.70 - Step 4: Simplify right side
80,745.63x = 4,682,933,471.99 - Step 5: Solve for x
x = 4,682,933,471.99/80,745.63 - Step 6: Final answer
x = 57,996.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.