Finding the Fourth Proportional to 76,321.36, 114,469.08 and 20,162.08
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Solution
The fourth proportional to 76,321.36, 114,469.08 and 20,162.08 is: 30,239.70
Step by Step Solution
- Step 1: Write the proportion equation
76,321.36 : 114,469.08 = 20,162.08 : x - Step 2: Convert to fraction form
76,321.36/114,469.08 = 20,162.08/x - Step 3: Cross multiply
76,321.36x = 114,469.08 × 20,162.08 - Step 4: Simplify right side
76,321.36x = 2,307,934,748.49 - Step 5: Solve for x
x = 2,307,934,748.49/76,321.36 - Step 6: Final answer
x = 30,239.70
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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.