Finding the Fourth Proportional to 76,811.85, 115,229.94 and 26,890.74
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Solution
The fourth proportional to 76,811.85, 115,229.94 and 26,890.74 is: 40,340.37
Step by Step Solution
- Step 1: Write the proportion equation
76,811.85 : 115,229.94 = 26,890.74 : x - Step 2: Convert to fraction form
76,811.85/115,229.94 = 26,890.74/x - Step 3: Cross multiply
76,811.85x = 115,229.94 × 26,890.74 - Step 4: Simplify right side
76,811.85x = 3,098,618,356.76 - Step 5: Solve for x
x = 3,098,618,356.76/76,811.85 - Step 6: Final answer
x = 40,340.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.