Finding the Fourth Proportional to 31,251,481.53, 43,122,954.66 and 18,021,147.07
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Solution
The fourth proportional to 31,251,481.53, 43,122,954.66 and 18,021,147.07 is: 24,866,824.55
Step by Step Solution
- Step 1: Write the proportion equation
31,251,481.53 : 43,122,954.66 = 18,021,147.07 : x - Step 2: Convert to fraction form
31,251,481.53/43,122,954.66 = 18,021,147.07/x - Step 3: Cross multiply
31,251,481.53x = 43,122,954.66 × 18,021,147.07 - Step 4: Simplify right side
31,251,481.53x = 777,125,108,020,801.75 - Step 5: Solve for x
x = 777,125,108,020,801.75/31,251,481.53 - Step 6: Final answer
x = 24,866,824.55
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1.5x scale
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.