Finding the Fourth Proportional to 81,214.10, 121,739.36 and 33,855.41
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Solution
The fourth proportional to 81,214.10, 121,739.36 and 33,855.41 is: 50,749.02
Step by Step Solution
- Step 1: Write the proportion equation
81,214.10 : 121,739.36 = 33,855.41 : x - Step 2: Convert to fraction form
81,214.10/121,739.36 = 33,855.41/x - Step 3: Cross multiply
81,214.10x = 121,739.36 × 33,855.41 - Step 4: Simplify right side
81,214.10x = 4,121,535,421.88 - Step 5: Solve for x
x = 4,121,535,421.88/81,214.10 - Step 6: Final answer
x = 50,749.02
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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.