Finding the Fourth Proportional to 67,181.04, 100,742.40 and 39,129.12
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Solution
The fourth proportional to 67,181.04, 100,742.40 and 39,129.12 is: 58,676.70
Step by Step Solution
- Step 1: Write the proportion equation
67,181.04 : 100,742.40 = 39,129.12 : x - Step 2: Convert to fraction form
67,181.04/100,742.40 = 39,129.12/x - Step 3: Cross multiply
67,181.04x = 100,742.40 × 39,129.12 - Step 4: Simplify right side
67,181.04x = 3,941,961,458.69 - Step 5: Solve for x
x = 3,941,961,458.69/67,181.04 - Step 6: Final answer
x = 58,676.70
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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.