Finding the Fourth Proportional to 68,522.09, 102,794.21 and 21,126.08
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Solution
The fourth proportional to 68,522.09, 102,794.21 and 21,126.08 is: 31,692.54
Step by Step Solution
- Step 1: Write the proportion equation
68,522.09 : 102,794.21 = 21,126.08 : x - Step 2: Convert to fraction form
68,522.09/102,794.21 = 21,126.08/x - Step 3: Cross multiply
68,522.09x = 102,794.21 × 21,126.08 - Step 4: Simplify right side
68,522.09x = 2,171,638,598.37 - Step 5: Solve for x
x = 2,171,638,598.37/68,522.09 - Step 6: Final answer
x = 31,692.54
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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.