Finding the Fourth Proportional to 83,408.74, 125,113.71 and 66,747.44
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Solution
The fourth proportional to 83,408.74, 125,113.71 and 66,747.44 is: 100,121.65
Step by Step Solution
- Step 1: Write the proportion equation
83,408.74 : 125,113.71 = 66,747.44 : x - Step 2: Convert to fraction form
83,408.74/125,113.71 = 66,747.44/x - Step 3: Cross multiply
83,408.74x = 125,113.71 × 66,747.44 - Step 4: Simplify right side
83,408.74x = 8,351,020,414.49 - Step 5: Solve for x
x = 8,351,020,414.49/83,408.74 - Step 6: Final answer
x = 100,121.65
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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.