Finding the Fourth Proportional to 75,745.13, 113,617.69 and 20,341.13
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Solution
The fourth proportional to 75,745.13, 113,617.69 and 20,341.13 is: 30,511.69
Step by Step Solution
- Step 1: Write the proportion equation
75,745.13 : 113,617.69 = 20,341.13 : x - Step 2: Convert to fraction form
75,745.13/113,617.69 = 20,341.13/x - Step 3: Cross multiply
75,745.13x = 113,617.69 × 20,341.13 - Step 4: Simplify right side
75,745.13x = 2,311,111,583.65 - Step 5: Solve for x
x = 2,311,111,583.65/75,745.13 - Step 6: Final answer
x = 30,511.69
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1.5x scale
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.