Finding the Fourth Proportional to 68,213,811.20, 102,320,716.80 and 49,178,163.20
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Solution
The fourth proportional to 68,213,811.20, 102,320,716.80 and 49,178,163.20 is: 73,767,244.80
Step by Step Solution
- Step 1: Write the proportion equation
68,213,811.20 : 102,320,716.80 = 49,178,163.20 : x - Step 2: Convert to fraction form
68,213,811.20/102,320,716.80 = 49,178,163.20/x - Step 3: Cross multiply
68,213,811.20x = 102,320,716.80 × 49,178,163.20 - Step 4: Simplify right side
68,213,811.20x = 5,031,944,909,531,382 - Step 5: Solve for x
x = 5,031,944,909,531,382/68,213,811.20 - Step 6: Final answer
x = 73,767,244.80
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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.