Finding the Fourth Proportional to 81,944.64, 122,917.80 and 54,043.44
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Solution
The fourth proportional to 81,944.64, 122,917.80 and 54,043.44 is: 81,065.71
Step by Step Solution
- Step 1: Write the proportion equation
81,944.64 : 122,917.80 = 54,043.44 : x - Step 2: Convert to fraction form
81,944.64/122,917.80 = 54,043.44/x - Step 3: Cross multiply
81,944.64x = 122,917.80 × 54,043.44 - Step 4: Simplify right side
81,944.64x = 6,642,900,749.23 - Step 5: Solve for x
x = 6,642,900,749.23/81,944.64 - Step 6: Final answer
x = 81,065.71
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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.