Finding the Fourth Proportional to 71,242.56, 106,761.60 and 40,012.08
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Solution
The fourth proportional to 71,242.56, 106,761.60 and 40,012.08 is: 59,960.70
Step by Step Solution
- Step 1: Write the proportion equation
71,242.56 : 106,761.60 = 40,012.08 : x - Step 2: Convert to fraction form
71,242.56/106,761.60 = 40,012.08/x - Step 3: Cross multiply
71,242.56x = 106,761.60 × 40,012.08 - Step 4: Simplify right side
71,242.56x = 4,271,753,680.13 - Step 5: Solve for x
x = 4,271,753,680.13/71,242.56 - Step 6: Final answer
x = 59,960.70
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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.