Finding the Fourth Proportional to 66,998,431.20, 100,497,646.80 and 26,608,915.20
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Solution
The fourth proportional to 66,998,431.20, 100,497,646.80 and 26,608,915.20 is: 39,913,372.80
Step by Step Solution
- Step 1: Write the proportion equation
66,998,431.20 : 100,497,646.80 = 26,608,915.20 : x - Step 2: Convert to fraction form
66,998,431.20/100,497,646.80 = 26,608,915.20/x - Step 3: Cross multiply
66,998,431.20x = 100,497,646.80 × 26,608,915.20 - Step 4: Simplify right side
66,998,431.20x = 2,674,133,361,500,751 - Step 5: Solve for x
x = 2,674,133,361,500,751/66,998,431.20 - Step 6: Final answer
x = 39,913,372.80
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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.