Finding the Fourth Proportional to 81,721.44, 122,567.45 and 22,542.44
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Solution
The fourth proportional to 81,721.44, 122,567.45 and 22,542.44 is: 33,809.59
Step by Step Solution
- Step 1: Write the proportion equation
81,721.44 : 122,567.45 = 22,542.44 : x - Step 2: Convert to fraction form
81,721.44/122,567.45 = 22,542.44/x - Step 3: Cross multiply
81,721.44x = 122,567.45 × 22,542.44 - Step 4: Simplify right side
81,721.44x = 2,762,968,662.03 - Step 5: Solve for x
x = 2,762,968,662.03/81,721.44 - Step 6: Final answer
x = 33,809.59
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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.