Finding the Fourth Proportional to 68,128,861.20, 102,193,291.80 and 43,942,390.80
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Solution
The fourth proportional to 68,128,861.20, 102,193,291.80 and 43,942,390.80 is: 65,913,586.20
Step by Step Solution
- Step 1: Write the proportion equation
68,128,861.20 : 102,193,291.80 = 43,942,390.80 : x - Step 2: Convert to fraction form
68,128,861.20/102,193,291.80 = 43,942,390.80/x - Step 3: Cross multiply
68,128,861.20x = 102,193,291.80 × 43,942,390.80 - Step 4: Simplify right side
68,128,861.20x = 4,490,617,565,414,035 - Step 5: Solve for x
x = 4,490,617,565,414,035/68,128,861.20 - Step 6: Final answer
x = 65,913,586.20
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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.