Finding the Fourth Proportional to 87,855.35, 121,239.83 and 47,568.99
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Solution
The fourth proportional to 87,855.35, 121,239.83 and 47,568.99 is: 65,644.91
Step by Step Solution
- Step 1: Write the proportion equation
87,855.35 : 121,239.83 = 47,568.99 : x - Step 2: Convert to fraction form
87,855.35/121,239.83 = 47,568.99/x - Step 3: Cross multiply
87,855.35x = 121,239.83 × 47,568.99 - Step 4: Simplify right side
87,855.35x = 5,767,256,260.87 - Step 5: Solve for x
x = 5,767,256,260.87/87,855.35 - Step 6: Final answer
x = 65,644.91
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.