Finding the Fourth Proportional to 39,192,812.67, 54,083,017.53 and 21,788,098.05
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Solution
The fourth proportional to 39,192,812.67, 54,083,017.53 and 21,788,098.05 is: 30,065,871.99
Step by Step Solution
- Step 1: Write the proportion equation
39,192,812.67 : 54,083,017.53 = 21,788,098.05 : x - Step 2: Convert to fraction form
39,192,812.67/54,083,017.53 = 21,788,098.05/x - Step 3: Cross multiply
39,192,812.67x = 54,083,017.53 × 21,788,098.05 - Step 4: Simplify right side
39,192,812.67x = 1,178,366,088,783,509 - Step 5: Solve for x
x = 1,178,366,088,783,509/39,192,812.67 - Step 6: Final answer
x = 30,065,871.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.