Finding the Fourth Proportional to 12,451,442.48, 18,638,856.68 and 8,124,175.05
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Solution
The fourth proportional to 12,451,442.48, 18,638,856.68 and 8,124,175.05 is: 12,161,268.44
Step by Step Solution
- Step 1: Write the proportion equation
12,451,442.48 : 18,638,856.68 = 8,124,175.05 : x - Step 2: Convert to fraction form
12,451,442.48/18,638,856.68 = 8,124,175.05/x - Step 3: Cross multiply
12,451,442.48x = 18,638,856.68 × 8,124,175.05 - Step 4: Simplify right side
12,451,442.48x = 151,425,334,400,181.81 - Step 5: Solve for x
x = 151,425,334,400,181.81/12,451,442.48 - Step 6: Final answer
x = 12,161,268.44
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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.