Finding the Fourth Proportional to 76,840.24, 115,260.36 and 20,680.48
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Solution
The fourth proportional to 76,840.24, 115,260.36 and 20,680.48 is: 31,020.72
Step by Step Solution
- Step 1: Write the proportion equation
76,840.24 : 115,260.36 = 20,680.48 : x - Step 2: Convert to fraction form
76,840.24/115,260.36 = 20,680.48/x - Step 3: Cross multiply
76,840.24x = 115,260.36 × 20,680.48 - Step 4: Simplify right side
76,840.24x = 2,383,639,569.77 - Step 5: Solve for x
x = 2,383,639,569.77/76,840.24 - Step 6: Final answer
x = 31,020.72
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Similar ratio
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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.