Finding the Fourth Proportional to 38,821,422.69, 53,573,193.86 and 21,417,908.49
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Solution
The fourth proportional to 38,821,422.69, 53,573,193.86 and 21,417,908.49 is: 29,556,509.89
Step by Step Solution
- Step 1: Write the proportion equation
38,821,422.69 : 53,573,193.86 = 21,417,908.49 : x - Step 2: Convert to fraction form
38,821,422.69/53,573,193.86 = 21,417,908.49/x - Step 3: Cross multiply
38,821,422.69x = 53,573,193.86 × 21,417,908.49 - Step 4: Simplify right side
38,821,422.69x = 1,147,425,763,503,420.25 - Step 5: Solve for x
x = 1,147,425,763,503,420.25/38,821,422.69 - Step 6: Final answer
x = 29,556,509.89
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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.