Finding the Fourth Proportional to 80,745.35, 111,313.11 and 56,797.70
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Solution
The fourth proportional to 80,745.35, 111,313.11 and 56,797.70 is: 78,299.60
Step by Step Solution
- Step 1: Write the proportion equation
80,745.35 : 111,313.11 = 56,797.70 : x - Step 2: Convert to fraction form
80,745.35/111,313.11 = 56,797.70/x - Step 3: Cross multiply
80,745.35x = 111,313.11 × 56,797.70 - Step 4: Simplify right side
80,745.35x = 6,322,328,906.13 - Step 5: Solve for x
x = 6,322,328,906.13/80,745.35 - Step 6: Final answer
x = 78,299.60
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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.