Finding the Fourth Proportional to 68,798.68, 103,198.18 and 18,879.44
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Solution
The fourth proportional to 68,798.68, 103,198.18 and 18,879.44 is: 28,319.20
Step by Step Solution
- Step 1: Write the proportion equation
68,798.68 : 103,198.18 = 18,879.44 : x - Step 2: Convert to fraction form
68,798.68/103,198.18 = 18,879.44/x - Step 3: Cross multiply
68,798.68x = 103,198.18 × 18,879.44 - Step 4: Simplify right side
68,798.68x = 1,948,323,847.42 - Step 5: Solve for x
x = 1,948,323,847.42/68,798.68 - Step 6: Final answer
x = 28,319.20
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1.5x scale
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.