Finding the Fourth Proportional to 139,571.11, 209,325.21 and 39,729.09
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Solution
The fourth proportional to 139,571.11, 209,325.21 and 39,729.09 is: 59,584.68
Step by Step Solution
- Step 1: Write the proportion equation
139,571.11 : 209,325.21 = 39,729.09 : x - Step 2: Convert to fraction form
139,571.11/209,325.21 = 39,729.09/x - Step 3: Cross multiply
139,571.11x = 209,325.21 × 39,729.09 - Step 4: Simplify right side
139,571.11x = 8,316,300,107.36 - Step 5: Solve for x
x = 8,316,300,107.36/139,571.11 - Step 6: Final answer
x = 59,584.68
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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.