Finding the Fourth Proportional to 75,136.99, 103,689.08 and 41,147.60
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Solution
The fourth proportional to 75,136.99, 103,689.08 and 41,147.60 is: 56,783.70
Step by Step Solution
- Step 1: Write the proportion equation
75,136.99 : 103,689.08 = 41,147.60 : x - Step 2: Convert to fraction form
75,136.99/103,689.08 = 41,147.60/x - Step 3: Cross multiply
75,136.99x = 103,689.08 × 41,147.60 - Step 4: Simplify right side
75,136.99x = 4,266,556,218.33 - Step 5: Solve for x
x = 4,266,556,218.33/75,136.99 - Step 6: Final answer
x = 56,783.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.