Finding the Fourth Proportional to 84,122.20, 126,186.54 and 21,791.08
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Solution
The fourth proportional to 84,122.20, 126,186.54 and 21,791.08 is: 32,687.46
Step by Step Solution
- Step 1: Write the proportion equation
84,122.20 : 126,186.54 = 21,791.08 : x - Step 2: Convert to fraction form
84,122.20/126,186.54 = 21,791.08/x - Step 3: Cross multiply
84,122.20x = 126,186.54 × 21,791.08 - Step 4: Simplify right side
84,122.20x = 2,749,740,988.06 - Step 5: Solve for x
x = 2,749,740,988.06/84,122.20 - Step 6: Final answer
x = 32,687.46
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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.