Finding the Fourth Proportional to 81,422,500.10, 122,133,750.15 and 27,569,812.10
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Solution
The fourth proportional to 81,422,500.10, 122,133,750.15 and 27,569,812.10 is: 41,354,718.15
Step by Step Solution
- Step 1: Write the proportion equation
81,422,500.10 : 122,133,750.15 = 27,569,812.10 : x - Step 2: Convert to fraction form
81,422,500.10/122,133,750.15 = 27,569,812.10/x - Step 3: Cross multiply
81,422,500.10x = 122,133,750.15 × 27,569,812.10 - Step 4: Simplify right side
81,422,500.10x = 3,367,204,542,703,847 - Step 5: Solve for x
x = 3,367,204,542,703,847/81,422,500.10 - Step 6: Final answer
x = 41,354,718.15
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Double scale
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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.