Finding the Fourth Proportional to 107,998.40, 161,920.80 and 41,412.80
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Solution
The fourth proportional to 107,998.40, 161,920.80 and 41,412.80 is: 62,089.75
Step by Step Solution
- Step 1: Write the proportion equation
107,998.40 : 161,920.80 = 41,412.80 : x - Step 2: Convert to fraction form
107,998.40/161,920.80 = 41,412.80/x - Step 3: Cross multiply
107,998.40x = 161,920.80 × 41,412.80 - Step 4: Simplify right side
107,998.40x = 6,705,593,706.24 - Step 5: Solve for x
x = 6,705,593,706.24/107,998.40 - Step 6: Final answer
x = 62,089.75
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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.