Finding the Fourth Proportional to 87,891.06, 121,289.61 and 47,604.81
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Solution
The fourth proportional to 87,891.06, 121,289.61 and 47,604.81 is: 65,694.61
Step by Step Solution
- Step 1: Write the proportion equation
87,891.06 : 121,289.61 = 47,604.81 : x - Step 2: Convert to fraction form
87,891.06/121,289.61 = 47,604.81/x - Step 3: Cross multiply
87,891.06x = 121,289.61 × 47,604.81 - Step 4: Simplify right side
87,891.06x = 5,773,968,839.02 - Step 5: Solve for x
x = 5,773,968,839.02/87,891.06 - Step 6: Final answer
x = 65,694.61
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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.