Finding the Fourth Proportional to 73,212.75, 101,033.60 and 39,678.75
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Solution
The fourth proportional to 73,212.75, 101,033.60 and 39,678.75 is: 54,756.68
Step by Step Solution
- Step 1: Write the proportion equation
73,212.75 : 101,033.60 = 39,678.75 : x - Step 2: Convert to fraction form
73,212.75/101,033.60 = 39,678.75/x - Step 3: Cross multiply
73,212.75x = 101,033.60 × 39,678.75 - Step 4: Simplify right side
73,212.75x = 4,008,886,956 - Step 5: Solve for x
x = 4,008,886,956/73,212.75 - Step 6: Final answer
x = 54,756.68
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1.5x scale
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.