Finding the Fourth Proportional to 85,724.16, 128,625.60 and 44,148.48
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Solution
The fourth proportional to 85,724.16, 128,625.60 and 44,148.48 is: 66,242.99
Step by Step Solution
- Step 1: Write the proportion equation
85,724.16 : 128,625.60 = 44,148.48 : x - Step 2: Convert to fraction form
85,724.16/128,625.60 = 44,148.48/x - Step 3: Cross multiply
85,724.16x = 128,625.60 × 44,148.48 - Step 4: Simplify right side
85,724.16x = 5,678,624,729.09 - Step 5: Solve for x
x = 5,678,624,729.09/85,724.16 - Step 6: Final answer
x = 66,242.99
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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.