Finding the Fourth Proportional to 71,418.97, 107,141.99 and 28,727.66
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Solution
The fourth proportional to 71,418.97, 107,141.99 and 28,727.66 is: 43,096.94
Step by Step Solution
- Step 1: Write the proportion equation
71,418.97 : 107,141.99 = 28,727.66 : x - Step 2: Convert to fraction form
71,418.97/107,141.99 = 28,727.66/x - Step 3: Cross multiply
71,418.97x = 107,141.99 × 28,727.66 - Step 4: Simplify right side
71,418.97x = 3,077,938,516.81 - Step 5: Solve for x
x = 3,077,938,516.81/71,418.97 - Step 6: Final answer
x = 43,096.94
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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.