Finding the Fourth Proportional to 75,431.75, 113,153.09 and 25,517.12
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Solution
The fourth proportional to 75,431.75, 113,153.09 and 25,517.12 is: 38,277.52
Step by Step Solution
- Step 1: Write the proportion equation
75,431.75 : 113,153.09 = 25,517.12 : x - Step 2: Convert to fraction form
75,431.75/113,153.09 = 25,517.12/x - Step 3: Cross multiply
75,431.75x = 113,153.09 × 25,517.12 - Step 4: Simplify right side
75,431.75x = 2,887,340,282.55 - Step 5: Solve for x
x = 2,887,340,282.55/75,431.75 - Step 6: Final answer
x = 38,277.52
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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.