Finding the Fourth Proportional to 68,784.26, 103,176.53 and 18,865.07
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Solution
The fourth proportional to 68,784.26, 103,176.53 and 18,865.07 is: 28,297.64
Step by Step Solution
- Step 1: Write the proportion equation
68,784.26 : 103,176.53 = 18,865.07 : x - Step 2: Convert to fraction form
68,784.26/103,176.53 = 18,865.07/x - Step 3: Cross multiply
68,784.26x = 103,176.53 × 18,865.07 - Step 4: Simplify right side
68,784.26x = 1,946,431,992.09 - Step 5: Solve for x
x = 1,946,431,992.09/68,784.26 - Step 6: Final answer
x = 28,297.64
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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.