Finding the Fourth Proportional to 72,845.12, 100,529.36 and 40,579.70
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Solution
The fourth proportional to 72,845.12, 100,529.36 and 40,579.70 is: 56,001.71
Step by Step Solution
- Step 1: Write the proportion equation
72,845.12 : 100,529.36 = 40,579.70 : x - Step 2: Convert to fraction form
72,845.12/100,529.36 = 40,579.70/x - Step 3: Cross multiply
72,845.12x = 100,529.36 × 40,579.70 - Step 4: Simplify right side
72,845.12x = 4,079,451,170.84 - Step 5: Solve for x
x = 4,079,451,170.84/72,845.12 - Step 6: Final answer
x = 56,001.71
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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.