Finding the Fourth Proportional to 81,391.23, 122,118.99 and 25,235.76
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Solution
The fourth proportional to 81,391.23, 122,118.99 and 25,235.76 is: 37,863.61
Step by Step Solution
- Step 1: Write the proportion equation
81,391.23 : 122,118.99 = 25,235.76 : x - Step 2: Convert to fraction form
81,391.23/122,118.99 = 25,235.76/x - Step 3: Cross multiply
81,391.23x = 122,118.99 × 25,235.76 - Step 4: Simplify right side
81,391.23x = 3,081,765,523.08 - Step 5: Solve for x
x = 3,081,765,523.08/81,391.23 - Step 6: Final answer
x = 37,863.61
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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.