Finding the Fourth Proportional to 76,801,891.46, 115,202,948.06 and 31,363,685.96
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Solution
The fourth proportional to 76,801,891.46, 115,202,948.06 and 31,363,685.96 is: 47,045,574.21
Step by Step Solution
- Step 1: Write the proportion equation
76,801,891.46 : 115,202,948.06 = 31,363,685.96 : x - Step 2: Convert to fraction form
76,801,891.46/115,202,948.06 = 31,363,685.96/x - Step 3: Cross multiply
76,801,891.46x = 115,202,948.06 × 31,363,685.96 - Step 4: Simplify right side
76,801,891.46x = 3,613,189,083,887,198 - Step 5: Solve for x
x = 3,613,189,083,887,198/76,801,891.46 - Step 6: Final answer
x = 47,045,574.21
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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.