Finding the Fourth Proportional to 81,662,489.80, 122,493,734.70 and 36,224,284.30
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Solution
The fourth proportional to 81,662,489.80, 122,493,734.70 and 36,224,284.30 is: 54,336,426.45
Step by Step Solution
- Step 1: Write the proportion equation
81,662,489.80 : 122,493,734.70 = 36,224,284.30 : x - Step 2: Convert to fraction form
81,662,489.80/122,493,734.70 = 36,224,284.30/x - Step 3: Cross multiply
81,662,489.80x = 122,493,734.70 × 36,224,284.30 - Step 4: Simplify right side
81,662,489.80x = 4,437,247,870,741,575 - Step 5: Solve for x
x = 4,437,247,870,741,575/81,662,489.80 - Step 6: Final answer
x = 54,336,426.45
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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.