Finding the Fourth Proportional to 75,869.62, 113,717.97 and 47,419.65
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Solution
The fourth proportional to 75,869.62, 113,717.97 and 47,419.65 is: 71,075.44
Step by Step Solution
- Step 1: Write the proportion equation
75,869.62 : 113,717.97 = 47,419.65 : x - Step 2: Convert to fraction form
75,869.62/113,717.97 = 47,419.65/x - Step 3: Cross multiply
75,869.62x = 113,717.97 × 47,419.65 - Step 4: Simplify right side
75,869.62x = 5,392,466,336.11 - Step 5: Solve for x
x = 5,392,466,336.11/75,869.62 - Step 6: Final answer
x = 71,075.44
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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.