Finding the Fourth Proportional to 78,721.21, 108,629.84 and 44,271.09
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Solution
The fourth proportional to 78,721.21, 108,629.84 and 44,271.09 is: 61,091.05
Step by Step Solution
- Step 1: Write the proportion equation
78,721.21 : 108,629.84 = 44,271.09 : x - Step 2: Convert to fraction form
78,721.21/108,629.84 = 44,271.09/x - Step 3: Cross multiply
78,721.21x = 108,629.84 × 44,271.09 - Step 4: Simplify right side
78,721.21x = 4,809,161,423.33 - Step 5: Solve for x
x = 4,809,161,423.33/78,721.21 - Step 6: Final answer
x = 61,091.05
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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.