Finding the Fourth Proportional to 87,890.38, 121,296.23 and 49,656.99
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Solution
The fourth proportional to 87,890.38, 121,296.23 and 49,656.99 is: 68,530.89
Step by Step Solution
- Step 1: Write the proportion equation
87,890.38 : 121,296.23 = 49,656.99 : x - Step 2: Convert to fraction form
87,890.38/121,296.23 = 49,656.99/x - Step 3: Cross multiply
87,890.38x = 121,296.23 × 49,656.99 - Step 4: Simplify right side
87,890.38x = 6,023,205,680.15 - Step 5: Solve for x
x = 6,023,205,680.15/87,890.38 - Step 6: Final answer
x = 68,530.89
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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.