Finding the Fourth Proportional to 73,645.12, 110,442.12 and 68,921.20
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Solution
The fourth proportional to 73,645.12, 110,442.12 and 68,921.20 is: 103,357.88
Step by Step Solution
- Step 1: Write the proportion equation
73,645.12 : 110,442.12 = 68,921.20 : x - Step 2: Convert to fraction form
73,645.12/110,442.12 = 68,921.20/x - Step 3: Cross multiply
73,645.12x = 110,442.12 × 68,921.20 - Step 4: Simplify right side
73,645.12x = 7,611,803,440.94 - Step 5: Solve for x
x = 7,611,803,440.94/73,645.12 - Step 6: Final answer
x = 103,357.88
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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.