Finding the Fourth Proportional to 85,933.02, 128,778.57 and 68,324.70
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Solution
The fourth proportional to 85,933.02, 128,778.57 and 68,324.70 is: 102,390.88
Step by Step Solution
- Step 1: Write the proportion equation
85,933.02 : 128,778.57 = 68,324.70 : x - Step 2: Convert to fraction form
85,933.02/128,778.57 = 68,324.70/x - Step 3: Cross multiply
85,933.02x = 128,778.57 × 68,324.70 - Step 4: Simplify right side
85,933.02x = 8,798,757,161.68 - Step 5: Solve for x
x = 8,798,757,161.68/85,933.02 - Step 6: Final answer
x = 102,390.88
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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.