Finding the Fourth Proportional to 38,830,940.98, 53,587,837.40 and 21,190,982.49
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Solution
The fourth proportional to 38,830,940.98, 53,587,837.40 and 21,190,982.49 is: 29,244,177.33
Step by Step Solution
- Step 1: Write the proportion equation
38,830,940.98 : 53,587,837.40 = 21,190,982.49 : x - Step 2: Convert to fraction form
38,830,940.98/53,587,837.40 = 21,190,982.49/x - Step 3: Cross multiply
38,830,940.98x = 53,587,837.40 × 21,190,982.49 - Step 4: Simplify right side
38,830,940.98x = 1,135,578,924,020,367 - Step 5: Solve for x
x = 1,135,578,924,020,367/38,830,940.98 - Step 6: Final answer
x = 29,244,177.33
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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.