Finding the Fourth Proportional to 93,416.43, 128,880.99 and 71,912.75
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Solution
The fourth proportional to 93,416.43, 128,880.99 and 71,912.75 is: 99,213.67
Step by Step Solution
- Step 1: Write the proportion equation
93,416.43 : 128,880.99 = 71,912.75 : x - Step 2: Convert to fraction form
93,416.43/128,880.99 = 71,912.75/x - Step 3: Cross multiply
93,416.43x = 128,880.99 × 71,912.75 - Step 4: Simplify right side
93,416.43x = 9,268,186,413.62 - Step 5: Solve for x
x = 9,268,186,413.62/93,416.43 - Step 6: Final answer
x = 99,213.67
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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.