Finding the Fourth Proportional to 86,273.74, 129,432.09 and 68,571.19
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Solution
The fourth proportional to 86,273.74, 129,432.09 and 68,571.19 is: 102,873.86
Step by Step Solution
- Step 1: Write the proportion equation
86,273.74 : 129,432.09 = 68,571.19 : x - Step 2: Convert to fraction form
86,273.74/129,432.09 = 68,571.19/x - Step 3: Cross multiply
86,273.74x = 129,432.09 × 68,571.19 - Step 4: Simplify right side
86,273.74x = 8,875,312,435.49 - Step 5: Solve for x
x = 8,875,312,435.49/86,273.74 - Step 6: Final answer
x = 102,873.86
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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.