Finding the Fourth Proportional to 68,409.12, 102,603.78 and 18,492.12
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Solution
The fourth proportional to 68,409.12, 102,603.78 and 18,492.12 is: 27,735.50
Step by Step Solution
- Step 1: Write the proportion equation
68,409.12 : 102,603.78 = 18,492.12 : x - Step 2: Convert to fraction form
68,409.12/102,603.78 = 18,492.12/x - Step 3: Cross multiply
68,409.12x = 102,603.78 × 18,492.12 - Step 4: Simplify right side
68,409.12x = 1,897,361,412.21 - Step 5: Solve for x
x = 1,897,361,412.21/68,409.12 - Step 6: Final answer
x = 27,735.50
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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.