Finding the Fourth Proportional to 79,914.24, 119,871.59 and 20,750.40
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Solution
The fourth proportional to 79,914.24, 119,871.59 and 20,750.40 is: 31,125.66
Step by Step Solution
- Step 1: Write the proportion equation
79,914.24 : 119,871.59 = 20,750.40 : x - Step 2: Convert to fraction form
79,914.24/119,871.59 = 20,750.40/x - Step 3: Cross multiply
79,914.24x = 119,871.59 × 20,750.40 - Step 4: Simplify right side
79,914.24x = 2,487,383,337.38 - Step 5: Solve for x
x = 2,487,383,337.38/79,914.24 - Step 6: Final answer
x = 31,125.66
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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.