Finding the Fourth Proportional to 81,430.44, 122,163.21 and 25,269.36
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Solution
The fourth proportional to 81,430.44, 122,163.21 and 25,269.36 is: 37,909.49
Step by Step Solution
- Step 1: Write the proportion equation
81,430.44 : 122,163.21 = 25,269.36 : x - Step 2: Convert to fraction form
81,430.44/122,163.21 = 25,269.36/x - Step 3: Cross multiply
81,430.44x = 122,163.21 × 25,269.36 - Step 4: Simplify right side
81,430.44x = 3,086,986,132.25 - Step 5: Solve for x
x = 3,086,986,132.25/81,430.44 - Step 6: Final answer
x = 37,909.49
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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.