Finding the Fourth Proportional to 75,490.40, 113,163.60 and 28,092.80
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Solution
The fourth proportional to 75,490.40, 113,163.60 and 28,092.80 is: 42,112.41
Step by Step Solution
- Step 1: Write the proportion equation
75,490.40 : 113,163.60 = 28,092.80 : x - Step 2: Convert to fraction form
75,490.40/113,163.60 = 28,092.80/x - Step 3: Cross multiply
75,490.40x = 113,163.60 × 28,092.80 - Step 4: Simplify right side
75,490.40x = 3,179,082,382.08 - Step 5: Solve for x
x = 3,179,082,382.08/75,490.40 - Step 6: Final answer
x = 42,112.41
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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.