Finding the Fourth Proportional to 75,445.44, 112,614.96 and 66,589.44
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Solution
The fourth proportional to 75,445.44, 112,614.96 and 66,589.44 is: 99,395.90
Step by Step Solution
- Step 1: Write the proportion equation
75,445.44 : 112,614.96 = 66,589.44 : x - Step 2: Convert to fraction form
75,445.44/112,614.96 = 66,589.44/x - Step 3: Cross multiply
75,445.44x = 112,614.96 × 66,589.44 - Step 4: Simplify right side
75,445.44x = 7,498,967,122.02 - Step 5: Solve for x
x = 7,498,967,122.02/75,445.44 - Step 6: Final answer
x = 99,395.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.