Finding the Fourth Proportional to 71,229.30, 106,840.97 and 18,637.62
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Solution
The fourth proportional to 71,229.30, 106,840.97 and 18,637.62 is: 27,955.65
Step by Step Solution
- Step 1: Write the proportion equation
71,229.30 : 106,840.97 = 18,637.62 : x - Step 2: Convert to fraction form
71,229.30/106,840.97 = 18,637.62/x - Step 3: Cross multiply
71,229.30x = 106,840.97 × 18,637.62 - Step 4: Simplify right side
71,229.30x = 1,991,261,399.29 - Step 5: Solve for x
x = 1,991,261,399.29/71,229.30 - Step 6: Final answer
x = 27,955.65
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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.