Finding the Fourth Proportional to 71,863.36, 107,791.20 and 25,115.20
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Solution
The fourth proportional to 71,863.36, 107,791.20 and 25,115.20 is: 37,671.46
Step by Step Solution
- Step 1: Write the proportion equation
71,863.36 : 107,791.20 = 25,115.20 : x - Step 2: Convert to fraction form
71,863.36/107,791.20 = 25,115.20/x - Step 3: Cross multiply
71,863.36x = 107,791.20 × 25,115.20 - Step 4: Simplify right side
71,863.36x = 2,707,197,546.24 - Step 5: Solve for x
x = 2,707,197,546.24/71,863.36 - Step 6: Final answer
x = 37,671.46
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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.