Finding the Fourth Proportional to 71,622.05, 107,454.68 and 38,358.05
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Solution
The fourth proportional to 71,622.05, 107,454.68 and 38,358.05 is: 57,548.64
Step by Step Solution
- Step 1: Write the proportion equation
71,622.05 : 107,454.68 = 38,358.05 : x - Step 2: Convert to fraction form
71,622.05/107,454.68 = 38,358.05/x - Step 3: Cross multiply
71,622.05x = 107,454.68 × 38,358.05 - Step 4: Simplify right side
71,622.05x = 4,121,751,796.38 - Step 5: Solve for x
x = 4,121,751,796.38/71,622.05 - Step 6: Final answer
x = 57,548.64
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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.