Finding the Fourth Proportional to 76,801,910.28, 115,202,976.30 and 31,363,704.78
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Solution
The fourth proportional to 76,801,910.28, 115,202,976.30 and 31,363,704.78 is: 47,045,602.45
Step by Step Solution
- Step 1: Write the proportion equation
76,801,910.28 : 115,202,976.30 = 31,363,704.78 : x - Step 2: Convert to fraction form
76,801,910.28/115,202,976.30 = 31,363,704.78/x - Step 3: Cross multiply
76,801,910.28x = 115,202,976.30 × 31,363,704.78 - Step 4: Simplify right side
76,801,910.28x = 3,613,192,138,450,537 - Step 5: Solve for x
x = 3,613,192,138,450,537/76,801,910.28 - Step 6: Final answer
x = 47,045,602.45
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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.