Finding the Fourth Proportional to 68,103,414.30, 102,155,121.45 and 45,310,403.10
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Solution
The fourth proportional to 68,103,414.30, 102,155,121.45 and 45,310,403.10 is: 67,965,604.65
Step by Step Solution
- Step 1: Write the proportion equation
68,103,414.30 : 102,155,121.45 = 45,310,403.10 : x - Step 2: Convert to fraction form
68,103,414.30/102,155,121.45 = 45,310,403.10/x - Step 3: Cross multiply
68,103,414.30x = 102,155,121.45 × 45,310,403.10 - Step 4: Simplify right side
68,103,414.30x = 4,628,689,731,628,957 - Step 5: Solve for x
x = 4,628,689,731,628,957/68,103,414.30 - Step 6: Final answer
x = 67,965,604.65
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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.