Finding the Fourth Proportional to 75,795.12, 113,692.60 and 20,391.12
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Solution
The fourth proportional to 75,795.12, 113,692.60 and 20,391.12 is: 30,586.66
Step by Step Solution
- Step 1: Write the proportion equation
75,795.12 : 113,692.60 = 20,391.12 : x - Step 2: Convert to fraction form
75,795.12/113,692.60 = 20,391.12/x - Step 3: Cross multiply
75,795.12x = 113,692.60 × 20,391.12 - Step 4: Simplify right side
75,795.12x = 2,318,319,449.71 - Step 5: Solve for x
x = 2,318,319,449.71/75,795.12 - Step 6: Final answer
x = 30,586.66
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1.5x scale
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.