Finding the Fourth Proportional to 81,492,826.90, 122,197,249.95 and 30,348,519.70
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Solution
The fourth proportional to 81,492,826.90, 122,197,249.95 and 30,348,519.70 is: 45,507,142.02
Step by Step Solution
- Step 1: Write the proportion equation
81,492,826.90 : 122,197,249.95 = 30,348,519.70 : x - Step 2: Convert to fraction form
81,492,826.90/122,197,249.95 = 30,348,519.70/x - Step 3: Cross multiply
81,492,826.90x = 122,197,249.95 × 30,348,519.70 - Step 4: Simplify right side
81,492,826.90x = 3,708,505,647,393,399 - Step 5: Solve for x
x = 3,708,505,647,393,399/81,492,826.90 - Step 6: Final answer
x = 45,507,142.02
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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.