Finding the Fourth Proportional to 72,640.98, 100,226.91 and 42,408.99
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Solution
The fourth proportional to 72,640.98, 100,226.91 and 42,408.99 is: 58,514.11
Step by Step Solution
- Step 1: Write the proportion equation
72,640.98 : 100,226.91 = 42,408.99 : x - Step 2: Convert to fraction form
72,640.98/100,226.91 = 42,408.99/x - Step 3: Cross multiply
72,640.98x = 100,226.91 × 42,408.99 - Step 4: Simplify right side
72,640.98x = 4,250,522,023.92 - Step 5: Solve for x
x = 4,250,522,023.92/72,640.98 - Step 6: Final answer
x = 58,514.11
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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.