Finding the Fourth Proportional to 87,789,951.60, 121,148,821.08 and 48,631,611.12
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Solution
The fourth proportional to 87,789,951.60, 121,148,821.08 and 48,631,611.12 is: 67,110,896.49
Step by Step Solution
- Step 1: Write the proportion equation
87,789,951.60 : 121,148,821.08 = 48,631,611.12 : x - Step 2: Convert to fraction form
87,789,951.60/121,148,821.08 = 48,631,611.12/x - Step 3: Cross multiply
87,789,951.60x = 121,148,821.08 × 48,631,611.12 - Step 4: Simplify right side
87,789,951.60x = 5,891,662,354,409,018 - Step 5: Solve for x
x = 5,891,662,354,409,018/87,789,951.60 - Step 6: Final answer
x = 67,110,896.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.