Finding the Fourth Proportional to 68,106.60, 102,236.70 and 40,420.20
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Solution
The fourth proportional to 68,106.60, 102,236.70 and 40,420.20 is: 60,675.88
Step by Step Solution
- Step 1: Write the proportion equation
68,106.60 : 102,236.70 = 40,420.20 : x - Step 2: Convert to fraction form
68,106.60/102,236.70 = 40,420.20/x - Step 3: Cross multiply
68,106.60x = 102,236.70 × 40,420.20 - Step 4: Simplify right side
68,106.60x = 4,132,427,861.34 - Step 5: Solve for x
x = 4,132,427,861.34/68,106.60 - Step 6: Final answer
x = 60,675.88
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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.