Finding the Fourth Proportional to 68,776.37, 103,157.65 and 18,861.49
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Solution
The fourth proportional to 68,776.37, 103,157.65 and 18,861.49 is: 28,290.34
Step by Step Solution
- Step 1: Write the proportion equation
68,776.37 : 103,157.65 = 18,861.49 : x - Step 2: Convert to fraction form
68,776.37/103,157.65 = 18,861.49/x - Step 3: Cross multiply
68,776.37x = 103,157.65 × 18,861.49 - Step 4: Simplify right side
68,776.37x = 1,945,707,136.42 - Step 5: Solve for x
x = 1,945,707,136.42/68,776.37 - Step 6: Final answer
x = 28,290.34
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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.