Finding the Fourth Proportional to 80,837.10, 121,247.10 and 21,678.75
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Solution
The fourth proportional to 80,837.10, 121,247.10 and 21,678.75 is: 32,515.83
Step by Step Solution
- Step 1: Write the proportion equation
80,837.10 : 121,247.10 = 21,678.75 : x - Step 2: Convert to fraction form
80,837.10/121,247.10 = 21,678.75/x - Step 3: Cross multiply
80,837.10x = 121,247.10 × 21,678.75 - Step 4: Simplify right side
80,837.10x = 2,628,485,569.13 - Step 5: Solve for x
x = 2,628,485,569.13/80,837.10 - Step 6: Final answer
x = 32,515.83
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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.