Finding the Fourth Proportional to 115,705.60, 159,626.60 and 75,404.68
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Solution
The fourth proportional to 115,705.60, 159,626.60 and 75,404.68 is: 104,027.75
Step by Step Solution
- Step 1: Write the proportion equation
115,705.60 : 159,626.60 = 75,404.68 : x - Step 2: Convert to fraction form
115,705.60/159,626.60 = 75,404.68/x - Step 3: Cross multiply
115,705.60x = 159,626.60 × 75,404.68 - Step 4: Simplify right side
115,705.60x = 12,036,592,692.49 - Step 5: Solve for x
x = 12,036,592,692.49/115,705.60 - Step 6: Final answer
x = 104,027.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.