Finding the Fourth Proportional to 91,722.36, 126,518.58 and 66,266.09
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Solution
The fourth proportional to 91,722.36, 126,518.58 and 66,266.09 is: 91,405.09
Step by Step Solution
- Step 1: Write the proportion equation
91,722.36 : 126,518.58 = 66,266.09 : x - Step 2: Convert to fraction form
91,722.36/126,518.58 = 66,266.09/x - Step 3: Cross multiply
91,722.36x = 126,518.58 × 66,266.09 - Step 4: Simplify right side
91,722.36x = 8,383,890,976.36 - Step 5: Solve for x
x = 8,383,890,976.36/91,722.36 - Step 6: Final answer
x = 91,405.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.