Finding the Fourth Proportional to 107,781.68, 161,692.13 and 36,700.68
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Solution
The fourth proportional to 107,781.68, 161,692.13 and 36,700.68 is: 55,057.70
Step by Step Solution
- Step 1: Write the proportion equation
107,781.68 : 161,692.13 = 36,700.68 : x - Step 2: Convert to fraction form
107,781.68/161,692.13 = 36,700.68/x - Step 3: Cross multiply
107,781.68x = 161,692.13 × 36,700.68 - Step 4: Simplify right side
107,781.68x = 5,934,211,121.65 - Step 5: Solve for x
x = 5,934,211,121.65/107,781.68 - Step 6: Final answer
x = 55,057.70
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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.