Finding the Fourth Proportional to 87,974.21, 121,241.60 and 62,481.69
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Solution
The fourth proportional to 87,974.21, 121,241.60 and 62,481.69 is: 86,109.10
Step by Step Solution
- Step 1: Write the proportion equation
87,974.21 : 121,241.60 = 62,481.69 : x - Step 2: Convert to fraction form
87,974.21/121,241.60 = 62,481.69/x - Step 3: Cross multiply
87,974.21x = 121,241.60 × 62,481.69 - Step 4: Simplify right side
87,974.21x = 7,575,380,066.30 - Step 5: Solve for x
x = 7,575,380,066.30/87,974.21 - Step 6: Final answer
x = 86,109.10
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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.