Finding the Fourth Proportional to 81,949.60, 122,751.60 and 68,125.60
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Solution
The fourth proportional to 81,949.60, 122,751.60 and 68,125.60 is: 102,044.75
Step by Step Solution
- Step 1: Write the proportion equation
81,949.60 : 122,751.60 = 68,125.60 : x - Step 2: Convert to fraction form
81,949.60/122,751.60 = 68,125.60/x - Step 3: Cross multiply
81,949.60x = 122,751.60 × 68,125.60 - Step 4: Simplify right side
81,949.60x = 8,362,526,400.96 - Step 5: Solve for x
x = 8,362,526,400.96/81,949.60 - Step 6: Final answer
x = 102,044.75
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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.