Finding the Fourth Proportional to 84,415.20, 126,622.80 and 22,085.70
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Solution
The fourth proportional to 84,415.20, 126,622.80 and 22,085.70 is: 33,128.55
Step by Step Solution
- Step 1: Write the proportion equation
84,415.20 : 126,622.80 = 22,085.70 : x - Step 2: Convert to fraction form
84,415.20/126,622.80 = 22,085.70/x - Step 3: Cross multiply
84,415.20x = 126,622.80 × 22,085.70 - Step 4: Simplify right side
84,415.20x = 2,796,553,173.96 - Step 5: Solve for x
x = 2,796,553,173.96/84,415.20 - Step 6: Final answer
x = 33,128.55
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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.