Finding the Fourth Proportional to 67,143,885.30, 100,715,821.97 and 18,621,738.36
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Solution
The fourth proportional to 67,143,885.30, 100,715,821.97 and 18,621,738.36 is: 27,932,605.88
Step by Step Solution
- Step 1: Write the proportion equation
67,143,885.30 : 100,715,821.97 = 18,621,738.36 : x - Step 2: Convert to fraction form
67,143,885.30/100,715,821.97 = 18,621,738.36/x - Step 3: Cross multiply
67,143,885.30x = 100,715,821.97 × 18,621,738.36 - Step 4: Simplify right side
67,143,885.30x = 1,875,503,685,344,571 - Step 5: Solve for x
x = 1,875,503,685,344,571/67,143,885.30 - Step 6: Final answer
x = 27,932,605.88
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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.