Finding the Fourth Proportional to 80,490.76, 120,708.80 and 27,887.96
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Solution
The fourth proportional to 80,490.76, 120,708.80 and 27,887.96 is: 41,822.47
Step by Step Solution
- Step 1: Write the proportion equation
80,490.76 : 120,708.80 = 27,887.96 : x - Step 2: Convert to fraction form
80,490.76/120,708.80 = 27,887.96/x - Step 3: Cross multiply
80,490.76x = 120,708.80 × 27,887.96 - Step 4: Simplify right side
80,490.76x = 3,366,322,186.05 - Step 5: Solve for x
x = 3,366,322,186.05/80,490.76 - Step 6: Final answer
x = 41,822.47
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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.