Finding the Fourth Proportional to 10,106,540.80, 15,159,811.20 and 8,512,217.80
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Solution
The fourth proportional to 10,106,540.80, 15,159,811.20 and 8,512,217.80 is: 12,768,326.70
Step by Step Solution
- Step 1: Write the proportion equation
10,106,540.80 : 15,159,811.20 = 8,512,217.80 : x - Step 2: Convert to fraction form
10,106,540.80/15,159,811.20 = 8,512,217.80/x - Step 3: Cross multiply
10,106,540.80x = 15,159,811.20 × 8,512,217.80 - Step 4: Simplify right side
10,106,540.80x = 129,043,614,741,279.36 - Step 5: Solve for x
x = 129,043,614,741,279.36/10,106,540.80 - Step 6: Final answer
x = 12,768,326.70
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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.