Finding the Fourth Proportional to 81,943.62, 122,917.86 and 32,021.70
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Solution
The fourth proportional to 81,943.62, 122,917.86 and 32,021.70 is: 48,033.50
Step by Step Solution
- Step 1: Write the proportion equation
81,943.62 : 122,917.86 = 32,021.70 : x - Step 2: Convert to fraction form
81,943.62/122,917.86 = 32,021.70/x - Step 3: Cross multiply
81,943.62x = 122,917.86 × 32,021.70 - Step 4: Simplify right side
81,943.62x = 3,936,038,837.56 - Step 5: Solve for x
x = 3,936,038,837.56/81,943.62 - Step 6: Final answer
x = 48,033.50
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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.