Finding the Fourth Proportional to 28,378,729,091.58, 39,144,193,192.58 and 18,201,336,614.99
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Solution
The fourth proportional to 28,378,729,091.58, 39,144,193,192.58 and 18,201,336,614.99 is: 25,106,009,311.44
Step by Step Solution
- Step 1: Write the proportion equation
28,378,729,091.58 : 39,144,193,192.58 = 18,201,336,614.99 : x - Step 2: Convert to fraction form
28,378,729,091.58/39,144,193,192.58 = 18,201,336,614.99/x - Step 3: Cross multiply
28,378,729,091.58x = 39,144,193,192.58 × 18,201,336,614.99 - Step 4: Simplify right side
28,378,729,091.58x = 712,476,636,820,061,945,856 - Step 5: Solve for x
x = 712,476,636,820,061,945,856/28,378,729,091.58 - Step 6: Final answer
x = 25,106,009,311.44
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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.