Finding the Fourth Proportional to 78,115.68, 117,079.56 and 44,857.08
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Solution
The fourth proportional to 78,115.68, 117,079.56 and 44,857.08 is: 67,231.66
Step by Step Solution
- Step 1: Write the proportion equation
78,115.68 : 117,079.56 = 44,857.08 : x - Step 2: Convert to fraction form
78,115.68/117,079.56 = 44,857.08/x - Step 3: Cross multiply
78,115.68x = 117,079.56 × 44,857.08 - Step 4: Simplify right side
78,115.68x = 5,251,847,189.28 - Step 5: Solve for x
x = 5,251,847,189.28/78,115.68 - Step 6: Final answer
x = 67,231.66
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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.