Finding the Fourth Proportional to 81,645.99, 122,476.73 and 31,729.94
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Solution
The fourth proportional to 81,645.99, 122,476.73 and 31,729.94 is: 47,597.92
Step by Step Solution
- Step 1: Write the proportion equation
81,645.99 : 122,476.73 = 31,729.94 : x - Step 2: Convert to fraction form
81,645.99/122,476.73 = 31,729.94/x - Step 3: Cross multiply
81,645.99x = 122,476.73 × 31,729.94 - Step 4: Simplify right side
81,645.99x = 3,886,179,600.49 - Step 5: Solve for x
x = 3,886,179,600.49/81,645.99 - Step 6: Final answer
x = 47,597.92
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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.