Finding the Fourth Proportional to 84,136.20, 126,207.54 and 21,805.08
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Solution
The fourth proportional to 84,136.20, 126,207.54 and 21,805.08 is: 32,708.46
Step by Step Solution
- Step 1: Write the proportion equation
84,136.20 : 126,207.54 = 21,805.08 : x - Step 2: Convert to fraction form
84,136.20/126,207.54 = 21,805.08/x - Step 3: Cross multiply
84,136.20x = 126,207.54 × 21,805.08 - Step 4: Simplify right side
84,136.20x = 2,751,965,506.30 - Step 5: Solve for x
x = 2,751,965,506.30/84,136.20 - Step 6: Final answer
x = 32,708.46
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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.