Finding the Fourth Proportional to 100,630.94, 138,872.33 and 57,610.26
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Solution
The fourth proportional to 100,630.94, 138,872.33 and 57,610.26 is: 79,503.09
Step by Step Solution
- Step 1: Write the proportion equation
100,630.94 : 138,872.33 = 57,610.26 : x - Step 2: Convert to fraction form
100,630.94/138,872.33 = 57,610.26/x - Step 3: Cross multiply
100,630.94x = 138,872.33 × 57,610.26 - Step 4: Simplify right side
100,630.94x = 8,000,470,750.05 - Step 5: Solve for x
x = 8,000,470,750.05/100,630.94 - Step 6: Final answer
x = 79,503.09
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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.