Finding the Fourth Proportional to 39,318,203.12, 54,259,371.99 and 21,915,651.60
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Solution
The fourth proportional to 39,318,203.12, 54,259,371.99 and 21,915,651.60 is: 30,243,739.50
Step by Step Solution
- Step 1: Write the proportion equation
39,318,203.12 : 54,259,371.99 = 21,915,651.60 : x - Step 2: Convert to fraction form
39,318,203.12/54,259,371.99 = 21,915,651.60/x - Step 3: Cross multiply
39,318,203.12x = 54,259,371.99 × 21,915,651.60 - Step 4: Simplify right side
39,318,203.12x = 1,189,129,492,567,638.75 - Step 5: Solve for x
x = 1,189,129,492,567,638.75/39,318,203.12 - Step 6: Final answer
x = 30,243,739.50
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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.