Finding the Fourth Proportional to 20,762,620.80, 31,138,401.60 and 6,385,660.80
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Solution
The fourth proportional to 20,762,620.80, 31,138,401.60 and 6,385,660.80 is: 9,576,790.54
Step by Step Solution
- Step 1: Write the proportion equation
20,762,620.80 : 31,138,401.60 = 6,385,660.80 : x - Step 2: Convert to fraction form
20,762,620.80/31,138,401.60 = 6,385,660.80/x - Step 3: Cross multiply
20,762,620.80x = 31,138,401.60 × 6,385,660.80 - Step 4: Simplify right side
20,762,620.80x = 198,839,270,471,777.28 - Step 5: Solve for x
x = 198,839,270,471,777.28/20,762,620.80 - Step 6: Final answer
x = 9,576,790.54
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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.