Finding the Fourth Proportional to 87,992.36, 121,397.63 and 57,794.05
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Solution
The fourth proportional to 87,992.36, 121,397.63 and 57,794.05 is: 79,734.88
Step by Step Solution
- Step 1: Write the proportion equation
87,992.36 : 121,397.63 = 57,794.05 : x - Step 2: Convert to fraction form
87,992.36/121,397.63 = 57,794.05/x - Step 3: Cross multiply
87,992.36x = 121,397.63 × 57,794.05 - Step 4: Simplify right side
87,992.36x = 7,016,060,698.10 - Step 5: Solve for x
x = 7,016,060,698.10/87,992.36 - Step 6: Final answer
x = 79,734.88
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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.