Finding the Fourth Proportional to 78,716.18, 118,015.95 and 47,544.14
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Solution
The fourth proportional to 78,716.18, 118,015.95 and 47,544.14 is: 71,280.99
Step by Step Solution
- Step 1: Write the proportion equation
78,716.18 : 118,015.95 = 47,544.14 : x - Step 2: Convert to fraction form
78,716.18/118,015.95 = 47,544.14/x - Step 3: Cross multiply
78,716.18x = 118,015.95 × 47,544.14 - Step 4: Simplify right side
78,716.18x = 5,610,967,322.36 - Step 5: Solve for x
x = 5,610,967,322.36/78,716.18 - Step 6: Final answer
x = 71,280.99
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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.