Finding the Fourth Proportional to 73,782.10, 110,660.77 and 20,479.49
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Solution
The fourth proportional to 73,782.10, 110,660.77 and 20,479.49 is: 30,715.80
Step by Step Solution
- Step 1: Write the proportion equation
73,782.10 : 110,660.77 = 20,479.49 : x - Step 2: Convert to fraction form
73,782.10/110,660.77 = 20,479.49/x - Step 3: Cross multiply
73,782.10x = 110,660.77 × 20,479.49 - Step 4: Simplify right side
73,782.10x = 2,266,276,358.06 - Step 5: Solve for x
x = 2,266,276,358.06/73,782.10 - Step 6: Final answer
x = 30,715.80
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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.