Finding the Fourth Proportional to 81,721.80, 122,580.26 and 22,561.08
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Solution
The fourth proportional to 81,721.80, 122,580.26 and 22,561.08 is: 33,840.95
Step by Step Solution
- Step 1: Write the proportion equation
81,721.80 : 122,580.26 = 22,561.08 : x - Step 2: Convert to fraction form
81,721.80/122,580.26 = 22,561.08/x - Step 3: Cross multiply
81,721.80x = 122,580.26 × 22,561.08 - Step 4: Simplify right side
81,721.80x = 2,765,543,052.28 - Step 5: Solve for x
x = 2,765,543,052.28/81,721.80 - Step 6: Final answer
x = 33,840.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.