Finding the Fourth Proportional to 30,608,467.68, 42,190,454.49 and 20,682,251.49
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Solution
The fourth proportional to 30,608,467.68, 42,190,454.49 and 20,682,251.49 is: 28,508,241.55
Step by Step Solution
- Step 1: Write the proportion equation
30,608,467.68 : 42,190,454.49 = 20,682,251.49 : x - Step 2: Convert to fraction form
30,608,467.68/42,190,454.49 = 20,682,251.49/x - Step 3: Cross multiply
30,608,467.68x = 42,190,454.49 × 20,682,251.49 - Step 4: Simplify right side
30,608,467.68x = 872,593,590,239,579.62 - Step 5: Solve for x
x = 872,593,590,239,579.62/30,608,467.68 - Step 6: Final answer
x = 28,508,241.55
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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.