Finding the Fourth Proportional to 74,682.21, 102,992.22 and 54,507.14
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Solution
The fourth proportional to 74,682.21, 102,992.22 and 54,507.14 is: 75,169.32
Step by Step Solution
- Step 1: Write the proportion equation
74,682.21 : 102,992.22 = 54,507.14 : x - Step 2: Convert to fraction form
74,682.21/102,992.22 = 54,507.14/x - Step 3: Cross multiply
74,682.21x = 102,992.22 × 54,507.14 - Step 4: Simplify right side
74,682.21x = 5,613,810,839.49 - Step 5: Solve for x
x = 5,613,810,839.49/74,682.21 - Step 6: Final answer
x = 75,169.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.