Finding the Fourth Proportional to 78,486.67, 117,754.32 and 27,199.71
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Solution
The fourth proportional to 78,486.67, 117,754.32 and 27,199.71 is: 40,807.99
Step by Step Solution
- Step 1: Write the proportion equation
78,486.67 : 117,754.32 = 27,199.71 : x - Step 2: Convert to fraction form
78,486.67/117,754.32 = 27,199.71/x - Step 3: Cross multiply
78,486.67x = 117,754.32 × 27,199.71 - Step 4: Simplify right side
78,486.67x = 3,202,883,355.25 - Step 5: Solve for x
x = 3,202,883,355.25/78,486.67 - Step 6: Final answer
x = 40,807.99
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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.