Finding the Fourth Proportional to 107,644.36, 161,453.84 and 28,764.68
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Solution
The fourth proportional to 107,644.36, 161,453.84 and 28,764.68 is: 43,143.63
Step by Step Solution
- Step 1: Write the proportion equation
107,644.36 : 161,453.84 = 28,764.68 : x - Step 2: Convert to fraction form
107,644.36/161,453.84 = 28,764.68/x - Step 3: Cross multiply
107,644.36x = 161,453.84 × 28,764.68 - Step 4: Simplify right side
107,644.36x = 4,644,168,042.37 - Step 5: Solve for x
x = 4,644,168,042.37/107,644.36 - Step 6: Final answer
x = 43,143.63
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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.