Finding the Fourth Proportional to 28,758,704.64, 43,138,942.68 and 12,576,326.20
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Solution
The fourth proportional to 28,758,704.64, 43,138,942.68 and 12,576,326.20 is: 18,864,876.63
Step by Step Solution
- Step 1: Write the proportion equation
28,758,704.64 : 43,138,942.68 = 12,576,326.20 : x - Step 2: Convert to fraction form
28,758,704.64/43,138,942.68 = 12,576,326.20/x - Step 3: Cross multiply
28,758,704.64x = 43,138,942.68 × 12,576,326.20 - Step 4: Simplify right side
28,758,704.64x = 542,529,415,066,782.19 - Step 5: Solve for x
x = 542,529,415,066,782.19/28,758,704.64 - Step 6: Final answer
x = 18,864,876.63
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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.