Finding the Fourth Proportional to 81,942,399.36, 122,921,872.58 and 26,607,920.75
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Solution
The fourth proportional to 81,942,399.36, 122,921,872.58 and 26,607,920.75 is: 39,914,567.67
Step by Step Solution
- Step 1: Write the proportion equation
81,942,399.36 : 122,921,872.58 = 26,607,920.75 : x - Step 2: Convert to fraction form
81,942,399.36/122,921,872.58 = 26,607,920.75/x - Step 3: Cross multiply
81,942,399.36x = 122,921,872.58 × 26,607,920.75 - Step 4: Simplify right side
81,942,399.36x = 3,270,695,443,963,105.50 - Step 5: Solve for x
x = 3,270,695,443,963,105.50/81,942,399.36 - Step 6: Final answer
x = 39,914,567.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.