Finding the Fourth Proportional to 68,958.40, 103,631.36 and 40,882.44
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Solution
The fourth proportional to 68,958.40, 103,631.36 and 40,882.44 is: 61,438.53
Step by Step Solution
- Step 1: Write the proportion equation
68,958.40 : 103,631.36 = 40,882.44 : x - Step 2: Convert to fraction form
68,958.40/103,631.36 = 40,882.44/x - Step 3: Cross multiply
68,958.40x = 103,631.36 × 40,882.44 - Step 4: Simplify right side
68,958.40x = 4,236,702,857.32 - Step 5: Solve for x
x = 4,236,702,857.32/68,958.40 - Step 6: Final answer
x = 61,438.53
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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.