Finding the Fourth Proportional to 120,450.24, 180,686.52 and 31,704.12
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Solution
The fourth proportional to 120,450.24, 180,686.52 and 31,704.12 is: 47,559.12
Step by Step Solution
- Step 1: Write the proportion equation
120,450.24 : 180,686.52 = 31,704.12 : x - Step 2: Convert to fraction form
120,450.24/180,686.52 = 31,704.12/x - Step 3: Cross multiply
120,450.24x = 180,686.52 × 31,704.12 - Step 4: Simplify right side
120,450.24x = 5,728,507,112.46 - Step 5: Solve for x
x = 5,728,507,112.46/120,450.24 - Step 6: Final answer
x = 47,559.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.