Finding the Fourth Proportional to 76,968,589.68, 106,176,384.09 and 47,590,531.20
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Solution
The fourth proportional to 76,968,589.68, 106,176,384.09 and 47,590,531.20 is: 65,650,033.87
Step by Step Solution
- Step 1: Write the proportion equation
76,968,589.68 : 106,176,384.09 = 47,590,531.20 : x - Step 2: Convert to fraction form
76,968,589.68/106,176,384.09 = 47,590,531.20/x - Step 3: Cross multiply
76,968,589.68x = 106,176,384.09 × 47,590,531.20 - Step 4: Simplify right side
76,968,589.68x = 5,052,990,519,738,329 - Step 5: Solve for x
x = 5,052,990,519,738,329/76,968,589.68 - Step 6: Final answer
x = 65,650,033.87
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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.