Finding the Fourth Proportional to 69,853.49, 104,783.73 and 19,940.99
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Solution
The fourth proportional to 69,853.49, 104,783.73 and 19,940.99 is: 29,912.47
Step by Step Solution
- Step 1: Write the proportion equation
69,853.49 : 104,783.73 = 19,940.99 : x - Step 2: Convert to fraction form
69,853.49/104,783.73 = 19,940.99/x - Step 3: Cross multiply
69,853.49x = 104,783.73 × 19,940.99 - Step 4: Simplify right side
69,853.49x = 2,089,490,713.40 - Step 5: Solve for x
x = 2,089,490,713.40/69,853.49 - Step 6: Final answer
x = 29,912.47
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1.5x scale
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.