Finding the Fourth Proportional to 81,580.96, 122,356.84 and 51,910.66
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Solution
The fourth proportional to 81,580.96, 122,356.84 and 51,910.66 is: 77,856.70
Step by Step Solution
- Step 1: Write the proportion equation
81,580.96 : 122,356.84 = 51,910.66 : x - Step 2: Convert to fraction form
81,580.96/122,356.84 = 51,910.66/x - Step 3: Cross multiply
81,580.96x = 122,356.84 × 51,910.66 - Step 4: Simplify right side
81,580.96x = 6,351,623,884.25 - Step 5: Solve for x
x = 6,351,623,884.25/81,580.96 - Step 6: Final answer
x = 77,856.70
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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.