Finding the Fourth Proportional to 76,320.36, 114,467.58 and 20,161.08
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Solution
The fourth proportional to 76,320.36, 114,467.58 and 20,161.08 is: 30,238.20
Step by Step Solution
- Step 1: Write the proportion equation
76,320.36 : 114,467.58 = 20,161.08 : x - Step 2: Convert to fraction form
76,320.36/114,467.58 = 20,161.08/x - Step 3: Cross multiply
76,320.36x = 114,467.58 × 20,161.08 - Step 4: Simplify right side
76,320.36x = 2,307,790,037.79 - Step 5: Solve for x
x = 2,307,790,037.79/76,320.36 - Step 6: Final answer
x = 30,238.20
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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.