Finding the Fourth Proportional to 81,992.16, 122,911.36 and 44,497.28
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Solution
The fourth proportional to 81,992.16, 122,911.36 and 44,497.28 is: 66,704.20
Step by Step Solution
- Step 1: Write the proportion equation
81,992.16 : 122,911.36 = 44,497.28 : x - Step 2: Convert to fraction form
81,992.16/122,911.36 = 44,497.28/x - Step 3: Cross multiply
81,992.16x = 122,911.36 × 44,497.28 - Step 4: Simplify right side
81,992.16x = 5,469,221,201.10 - Step 5: Solve for x
x = 5,469,221,201.10/81,992.16 - Step 6: Final answer
x = 66,704.20
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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.