Finding the Fourth Proportional to 81,455.36, 122,178.46 and 22,286.67
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Solution
The fourth proportional to 81,455.36, 122,178.46 and 22,286.67 is: 33,428.75
Step by Step Solution
- Step 1: Write the proportion equation
81,455.36 : 122,178.46 = 22,286.67 : x - Step 2: Convert to fraction form
81,455.36/122,178.46 = 22,286.67/x - Step 3: Cross multiply
81,455.36x = 122,178.46 × 22,286.67 - Step 4: Simplify right side
81,455.36x = 2,722,951,019.13 - Step 5: Solve for x
x = 2,722,951,019.13/81,455.36 - Step 6: Final answer
x = 33,428.75
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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.