Finding the Fourth Proportional to 87,827.09, 121,271.25 and 81,110.26
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Solution
The fourth proportional to 87,827.09, 121,271.25 and 81,110.26 is: 111,996.68
Step by Step Solution
- Step 1: Write the proportion equation
87,827.09 : 121,271.25 = 81,110.26 : x - Step 2: Convert to fraction form
87,827.09/121,271.25 = 81,110.26/x - Step 3: Cross multiply
87,827.09x = 121,271.25 × 81,110.26 - Step 4: Simplify right side
87,827.09x = 9,836,342,618.03 - Step 5: Solve for x
x = 9,836,342,618.03/87,827.09 - Step 6: Final answer
x = 111,996.68
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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.