Finding the Fourth Proportional to 38,402,431.88, 52,985,142.77 and 21,882,202.97
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Solution
The fourth proportional to 38,402,431.88, 52,985,142.77 and 21,882,202.97 is: 30,191,620.47
Step by Step Solution
- Step 1: Write the proportion equation
38,402,431.88 : 52,985,142.77 = 21,882,202.97 : x - Step 2: Convert to fraction form
38,402,431.88/52,985,142.77 = 21,882,202.97/x - Step 3: Cross multiply
38,402,431.88x = 52,985,142.77 × 21,882,202.97 - Step 4: Simplify right side
38,402,431.88x = 1,159,431,648,113,231.25 - Step 5: Solve for x
x = 1,159,431,648,113,231.25/38,402,431.88 - Step 6: Final answer
x = 30,191,620.47
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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.