Finding the Fourth Proportional to 87,721.97, 121,048.97 and 51,905.70
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Solution
The fourth proportional to 87,721.97, 121,048.97 and 51,905.70 is: 71,625.52
Step by Step Solution
- Step 1: Write the proportion equation
87,721.97 : 121,048.97 = 51,905.70 : x - Step 2: Convert to fraction form
87,721.97/121,048.97 = 51,905.70/x - Step 3: Cross multiply
87,721.97x = 121,048.97 × 51,905.70 - Step 4: Simplify right side
87,721.97x = 6,283,131,262.60 - Step 5: Solve for x
x = 6,283,131,262.60/87,721.97 - Step 6: Final answer
x = 71,625.52
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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.