Finding the Fourth Proportional to 39,930,230.25, 55,103,717.84 and 21,595,515.75
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Solution
The fourth proportional to 39,930,230.25, 55,103,717.84 and 21,595,515.75 is: 29,801,811.78
Step by Step Solution
- Step 1: Write the proportion equation
39,930,230.25 : 55,103,717.84 = 21,595,515.75 : x - Step 2: Convert to fraction form
39,930,230.25/55,103,717.84 = 21,595,515.75/x - Step 3: Cross multiply
39,930,230.25x = 55,103,717.84 × 21,595,515.75 - Step 4: Simplify right side
39,930,230.25x = 1,189,993,206,389,298.50 - Step 5: Solve for x
x = 1,189,993,206,389,298.50/39,930,230.25 - Step 6: Final answer
x = 29,801,811.78
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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.