Finding the Fourth Proportional to 85,770.22, 128,586.60 and 40,768.99
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Solution
The fourth proportional to 85,770.22, 128,586.60 and 40,768.99 is: 61,120.82
Step by Step Solution
- Step 1: Write the proportion equation
85,770.22 : 128,586.60 = 40,768.99 : x - Step 2: Convert to fraction form
85,770.22/128,586.60 = 40,768.99/x - Step 3: Cross multiply
85,770.22x = 128,586.60 × 40,768.99 - Step 4: Simplify right side
85,770.22x = 5,242,345,809.53 - Step 5: Solve for x
x = 5,242,345,809.53/85,770.22 - Step 6: Final answer
x = 61,120.82
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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.