Finding the Fourth Proportional to 79,419.82, 119,129.77 and 49,858.41
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Solution
The fourth proportional to 79,419.82, 119,129.77 and 49,858.41 is: 74,787.64
Step by Step Solution
- Step 1: Write the proportion equation
79,419.82 : 119,129.77 = 49,858.41 : x - Step 2: Convert to fraction form
79,419.82/119,129.77 = 49,858.41/x - Step 3: Cross multiply
79,419.82x = 119,129.77 × 49,858.41 - Step 4: Simplify right side
79,419.82x = 5,939,620,940.13 - Step 5: Solve for x
x = 5,939,620,940.13/79,419.82 - Step 6: Final answer
x = 74,787.64
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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.