Finding the Fourth Proportional to 68,778.12, 103,635.84 and 56,571.60
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Solution
The fourth proportional to 68,778.12, 103,635.84 and 56,571.60 is: 85,242.88
Step by Step Solution
- Step 1: Write the proportion equation
68,778.12 : 103,635.84 = 56,571.60 : x - Step 2: Convert to fraction form
68,778.12/103,635.84 = 56,571.60/x - Step 3: Cross multiply
68,778.12x = 103,635.84 × 56,571.60 - Step 4: Simplify right side
68,778.12x = 5,862,845,286.14 - Step 5: Solve for x
x = 5,862,845,286.14/68,778.12 - Step 6: Final answer
x = 85,242.88
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.