Finding the Fourth Proportional to 75,629.57, 113,442.12 and 31,222.53
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Solution
The fourth proportional to 75,629.57, 113,442.12 and 31,222.53 is: 46,832.88
Step by Step Solution
- Step 1: Write the proportion equation
75,629.57 : 113,442.12 = 31,222.53 : x - Step 2: Convert to fraction form
75,629.57/113,442.12 = 31,222.53/x - Step 3: Cross multiply
75,629.57x = 113,442.12 × 31,222.53 - Step 4: Simplify right side
75,629.57x = 3,541,949,994.96 - Step 5: Solve for x
x = 3,541,949,994.96/75,629.57 - Step 6: Final answer
x = 46,832.88
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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.