Finding the Fourth Proportional to 91,202.78, 125,861.95 and 57,212.70
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Solution
The fourth proportional to 91,202.78, 125,861.95 and 57,212.70 is: 78,954.85
Step by Step Solution
- Step 1: Write the proportion equation
91,202.78 : 125,861.95 = 57,212.70 : x - Step 2: Convert to fraction form
91,202.78/125,861.95 = 57,212.70/x - Step 3: Cross multiply
91,202.78x = 125,861.95 × 57,212.70 - Step 4: Simplify right side
91,202.78x = 7,200,901,586.30 - Step 5: Solve for x
x = 7,200,901,586.30/91,202.78 - Step 6: Final answer
x = 78,954.85
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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.