Finding the Fourth Proportional to 39,960,877.68, 55,145,902.64 and 21,626,163.20
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Solution
The fourth proportional to 39,960,877.68, 55,145,902.64 and 21,626,163.20 is: 29,844,046.47
Step by Step Solution
- Step 1: Write the proportion equation
39,960,877.68 : 55,145,902.64 = 21,626,163.20 : x - Step 2: Convert to fraction form
39,960,877.68/55,145,902.64 = 21,626,163.20/x - Step 3: Cross multiply
39,960,877.68x = 55,145,902.64 × 21,626,163.20 - Step 4: Simplify right side
39,960,877.68x = 1,192,594,290,303,950.75 - Step 5: Solve for x
x = 1,192,594,290,303,950.75/39,960,877.68 - Step 6: Final answer
x = 29,844,046.47
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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.