Finding the Fourth Proportional to 80,974.61, 111,745.13 and 45,163.70
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Solution
The fourth proportional to 80,974.61, 111,745.13 and 45,163.70 is: 62,325.99
Step by Step Solution
- Step 1: Write the proportion equation
80,974.61 : 111,745.13 = 45,163.70 : x - Step 2: Convert to fraction form
80,974.61/111,745.13 = 45,163.70/x - Step 3: Cross multiply
80,974.61x = 111,745.13 × 45,163.70 - Step 4: Simplify right side
80,974.61x = 5,046,822,743.24 - Step 5: Solve for x
x = 5,046,822,743.24/80,974.61 - Step 6: Final answer
x = 62,325.99
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1.5x scale
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.