Finding the Fourth Proportional to 81,646,412.10, 122,469,618.15 and 75,410,837.70
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Solution
The fourth proportional to 81,646,412.10, 122,469,618.15 and 75,410,837.70 is: 113,116,256.55
Step by Step Solution
- Step 1: Write the proportion equation
81,646,412.10 : 122,469,618.15 = 75,410,837.70 : x - Step 2: Convert to fraction form
81,646,412.10/122,469,618.15 = 75,410,837.70/x - Step 3: Cross multiply
81,646,412.10x = 122,469,618.15 × 75,410,837.70 - Step 4: Simplify right side
81,646,412.10x = 9,235,536,497,490,626 - Step 5: Solve for x
x = 9,235,536,497,490,626/81,646,412.10 - Step 6: Final answer
x = 113,116,256.55
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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.