Finding the Fourth Proportional to 73,819.80, 110,729.70 and 69,931.80
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Solution
The fourth proportional to 73,819.80, 110,729.70 and 69,931.80 is: 104,897.70
Step by Step Solution
- Step 1: Write the proportion equation
73,819.80 : 110,729.70 = 69,931.80 : x - Step 2: Convert to fraction form
73,819.80/110,729.70 = 69,931.80/x - Step 3: Cross multiply
73,819.80x = 110,729.70 × 69,931.80 - Step 4: Simplify right side
73,819.80x = 7,743,527,234.46 - Step 5: Solve for x
x = 7,743,527,234.46/73,819.80 - Step 6: Final answer
x = 104,897.70
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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.