Finding the Fourth Proportional to 107,920.80, 161,899.70 and 33,039.09
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Solution
The fourth proportional to 107,920.80, 161,899.70 and 33,039.09 is: 49,564.30
Step by Step Solution
- Step 1: Write the proportion equation
107,920.80 : 161,899.70 = 33,039.09 : x - Step 2: Convert to fraction form
107,920.80/161,899.70 = 33,039.09/x - Step 3: Cross multiply
107,920.80x = 161,899.70 × 33,039.09 - Step 4: Simplify right side
107,920.80x = 5,349,018,594.08 - Step 5: Solve for x
x = 5,349,018,594.08/107,920.80 - Step 6: Final answer
x = 49,564.30
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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.