Finding the Fourth Proportional to 68,382,849.30, 102,574,273.95 and 20,513,793.30
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Solution
The fourth proportional to 68,382,849.30, 102,574,273.95 and 20,513,793.30 is: 30,770,689.95
Step by Step Solution
- Step 1: Write the proportion equation
68,382,849.30 : 102,574,273.95 = 20,513,793.30 : x - Step 2: Convert to fraction form
68,382,849.30/102,574,273.95 = 20,513,793.30/x - Step 3: Cross multiply
68,382,849.30x = 102,574,273.95 × 20,513,793.30 - Step 4: Simplify right side
68,382,849.30x = 2,104,187,453,707,874.75 - Step 5: Solve for x
x = 2,104,187,453,707,874.75/68,382,849.30 - Step 6: Final answer
x = 30,770,689.95
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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.