Finding the Fourth Proportional to 39,318,108.72, 54,259,241.92 and 21,915,557.42
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Solution
The fourth proportional to 39,318,108.72, 54,259,241.92 and 21,915,557.42 is: 30,243,609.64
Step by Step Solution
- Step 1: Write the proportion equation
39,318,108.72 : 54,259,241.92 = 21,915,557.42 : x - Step 2: Convert to fraction form
39,318,108.72/54,259,241.92 = 21,915,557.42/x - Step 3: Cross multiply
39,318,108.72x = 54,259,241.92 × 21,915,557.42 - Step 4: Simplify right side
39,318,108.72x = 1,189,121,531,863,431.25 - Step 5: Solve for x
x = 1,189,121,531,863,431.25/39,318,108.72 - Step 6: Final answer
x = 30,243,609.64
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1.5x scale
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.