Finding the Fourth Proportional to 73,142.84, 100,936.53 and 39,608.84
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Solution
The fourth proportional to 73,142.84, 100,936.53 and 39,608.84 is: 54,659.88
Step by Step Solution
- Step 1: Write the proportion equation
73,142.84 : 100,936.53 = 39,608.84 : x - Step 2: Convert to fraction form
73,142.84/100,936.53 = 39,608.84/x - Step 3: Cross multiply
73,142.84x = 100,936.53 × 39,608.84 - Step 4: Simplify right side
73,142.84x = 3,997,978,866.93 - Step 5: Solve for x
x = 3,997,978,866.93/73,142.84 - Step 6: Final answer
x = 54,659.88
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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.