Finding the Fourth Proportional to 68,660.40, 102,990.60 and 68,660.40
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Solution
The fourth proportional to 68,660.40, 102,990.60 and 68,660.40 is: 102,990.60
Step by Step Solution
- Step 1: Write the proportion equation
68,660.40 : 102,990.60 = 68,660.40 : x - Step 2: Convert to fraction form
68,660.40/102,990.60 = 68,660.40/x - Step 3: Cross multiply
68,660.40x = 102,990.60 × 68,660.40 - Step 4: Simplify right side
68,660.40x = 7,071,375,792.24 - Step 5: Solve for x
x = 7,071,375,792.24/68,660.40 - Step 6: Final answer
x = 102,990.60
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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.