Finding the Fourth Proportional to 68,421.36, 102,528.36 and 50,809.20
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Solution
The fourth proportional to 68,421.36, 102,528.36 and 50,809.20 is: 76,136.81
Step by Step Solution
- Step 1: Write the proportion equation
68,421.36 : 102,528.36 = 50,809.20 : x - Step 2: Convert to fraction form
68,421.36/102,528.36 = 50,809.20/x - Step 3: Cross multiply
68,421.36x = 102,528.36 × 50,809.20 - Step 4: Simplify right side
68,421.36x = 5,209,383,948.91 - Step 5: Solve for x
x = 5,209,383,948.91/68,421.36 - Step 6: Final answer
x = 76,136.81
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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.