Finding the Fourth Proportional to 68,258,505.20, 102,413,544.36 and 40,983,815.84
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Solution
The fourth proportional to 68,258,505.20, 102,413,544.36 and 40,983,815.84 is: 61,491,206.54
Step by Step Solution
- Step 1: Write the proportion equation
68,258,505.20 : 102,413,544.36 = 40,983,815.84 : x - Step 2: Convert to fraction form
68,258,505.20/102,413,544.36 = 40,983,815.84/x - Step 3: Cross multiply
68,258,505.20x = 102,413,544.36 × 40,983,815.84 - Step 4: Simplify right side
68,258,505.20x = 4,197,297,841,571,911 - Step 5: Solve for x
x = 4,197,297,841,571,911/68,258,505.20 - Step 6: Final answer
x = 61,491,206.54
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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.