Finding the Fourth Proportional to 87,450.30, 120,617.49 and 57,187.08
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Solution
The fourth proportional to 87,450.30, 120,617.49 and 57,187.08 is: 78,876.37
Step by Step Solution
- Step 1: Write the proportion equation
87,450.30 : 120,617.49 = 57,187.08 : x - Step 2: Convert to fraction form
87,450.30/120,617.49 = 57,187.08/x - Step 3: Cross multiply
87,450.30x = 120,617.49 × 57,187.08 - Step 4: Simplify right side
87,450.30x = 6,897,762,050.03 - Step 5: Solve for x
x = 6,897,762,050.03/87,450.30 - Step 6: Final answer
x = 78,876.37
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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.