Finding the Third Proportional to 66,613,990 and 99,920,655
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Solution
The third proportional to 66,613,990 and 99,920,655 is: 149,880,487.50
Step by Step Solution
- Step 1: Write the proportion equation
66,613,990 : 99,920,655 = 99,920,655 : x - Step 2: Convert to fraction form
66,613,990/99,920,655 = 99,920,655/x - Step 3: Cross multiply
66,613,990x = 99,920,655 × 99,920,655 - Step 4: Simplify right side
66,613,990x = 9,984,137,295,629,024 - Step 5: Solve for x
x = 9,984,137,295,629,024/66,613,990 - Step 6: Final answer
x = 149,880,487.50
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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.