Finding the Fourth Proportional to 81,357.09, 122,031.99 and 22,192.57
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Solution
The fourth proportional to 81,357.09, 122,031.99 and 22,192.57 is: 33,287.86
Step by Step Solution
- Step 1: Write the proportion equation
81,357.09 : 122,031.99 = 22,192.57 : x - Step 2: Convert to fraction form
81,357.09/122,031.99 = 22,192.57/x - Step 3: Cross multiply
81,357.09x = 122,031.99 × 22,192.57 - Step 4: Simplify right side
81,357.09x = 2,708,203,175.23 - Step 5: Solve for x
x = 2,708,203,175.23/81,357.09 - Step 6: Final answer
x = 33,287.86
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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.