Finding the Fourth Proportional to 115,169.21, 172,778.42 and 40,291.80
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Solution
The fourth proportional to 115,169.21, 172,778.42 and 40,291.80 is: 60,446.31
Step by Step Solution
- Step 1: Write the proportion equation
115,169.21 : 172,778.42 = 40,291.80 : x - Step 2: Convert to fraction form
115,169.21/172,778.42 = 40,291.80/x - Step 3: Cross multiply
115,169.21x = 172,778.42 × 40,291.80 - Step 4: Simplify right side
115,169.21x = 6,961,553,998.98 - Step 5: Solve for x
x = 6,961,553,998.98/115,169.21 - Step 6: Final answer
x = 60,446.31
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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.