Finding the Fourth Proportional to 39,431,823.68, 54,338,402.40 and 30,149,910.56
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Solution
The fourth proportional to 39,431,823.68, 54,338,402.40 and 30,149,910.56 is: 41,547,608.49
Step by Step Solution
- Step 1: Write the proportion equation
39,431,823.68 : 54,338,402.40 = 30,149,910.56 : x - Step 2: Convert to fraction form
39,431,823.68/54,338,402.40 = 30,149,910.56/x - Step 3: Cross multiply
39,431,823.68x = 54,338,402.40 × 30,149,910.56 - Step 4: Simplify right side
39,431,823.68x = 1,638,297,972,333,289.25 - Step 5: Solve for x
x = 1,638,297,972,333,289.25/39,431,823.68 - Step 6: Final answer
x = 41,547,608.49
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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.