Finding the Fourth Proportional to 72,843.99, 100,532.39 and 42,639.09
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Solution
The fourth proportional to 72,843.99, 100,532.39 and 42,639.09 is: 58,846.44
Step by Step Solution
- Step 1: Write the proportion equation
72,843.99 : 100,532.39 = 42,639.09 : x - Step 2: Convert to fraction form
72,843.99/100,532.39 = 42,639.09/x - Step 3: Cross multiply
72,843.99x = 100,532.39 × 42,639.09 - Step 4: Simplify right side
72,843.99x = 4,286,609,411.93 - Step 5: Solve for x
x = 4,286,609,411.93/72,843.99 - Step 6: Final answer
x = 58,846.44
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1.5x scale
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.