Finding the Fourth Proportional to 76,917.40, 115,376.10 and 73,571.80
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Solution
The fourth proportional to 76,917.40, 115,376.10 and 73,571.80 is: 110,357.70
Step by Step Solution
- Step 1: Write the proportion equation
76,917.40 : 115,376.10 = 73,571.80 : x - Step 2: Convert to fraction form
76,917.40/115,376.10 = 73,571.80/x - Step 3: Cross multiply
76,917.40x = 115,376.10 × 73,571.80 - Step 4: Simplify right side
76,917.40x = 8,488,427,353.98 - Step 5: Solve for x
x = 8,488,427,353.98/76,917.40 - Step 6: Final answer
x = 110,357.70
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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.