Finding the Fourth Proportional to 81,606.80, 122,431.80 and 29,010.80
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Solution
The fourth proportional to 81,606.80, 122,431.80 and 29,010.80 is: 43,523.88
Step by Step Solution
- Step 1: Write the proportion equation
81,606.80 : 122,431.80 = 29,010.80 : x - Step 2: Convert to fraction form
81,606.80/122,431.80 = 29,010.80/x - Step 3: Cross multiply
81,606.80x = 122,431.80 × 29,010.80 - Step 4: Simplify right side
81,606.80x = 3,551,844,463.44 - Step 5: Solve for x
x = 3,551,844,463.44/81,606.80 - Step 6: Final answer
x = 43,523.88
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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.