Finding the Fourth Proportional to 39,318,134.85, 54,259,277.99 and 21,915,583.56
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Solution
The fourth proportional to 39,318,134.85, 54,259,277.99 and 21,915,583.56 is: 30,243,645.72
Step by Step Solution
- Step 1: Write the proportion equation
39,318,134.85 : 54,259,277.99 = 21,915,583.56 : x - Step 2: Convert to fraction form
39,318,134.85/54,259,277.99 = 21,915,583.56/x - Step 3: Cross multiply
39,318,134.85x = 54,259,277.99 × 21,915,583.56 - Step 4: Simplify right side
39,318,134.85x = 1,189,123,740,585,535.75 - Step 5: Solve for x
x = 1,189,123,740,585,535.75/39,318,134.85 - Step 6: Final answer
x = 30,243,645.72
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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.