Finding the Fourth Proportional to 75,471.61, 104,107.45 and 47,128.09
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Solution
The fourth proportional to 75,471.61, 104,107.45 and 47,128.09 is: 65,009.68
Step by Step Solution
- Step 1: Write the proportion equation
75,471.61 : 104,107.45 = 47,128.09 : x - Step 2: Convert to fraction form
75,471.61/104,107.45 = 47,128.09/x - Step 3: Cross multiply
75,471.61x = 104,107.45 × 47,128.09 - Step 4: Simplify right side
75,471.61x = 4,906,384,517.09 - Step 5: Solve for x
x = 4,906,384,517.09/75,471.61 - Step 6: Final answer
x = 65,009.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.