Finding the Fourth Proportional to 79,838.70, 119,693.09 and 29,890.81
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Solution
The fourth proportional to 79,838.70, 119,693.09 and 29,890.81 is: 44,811.90
Step by Step Solution
- Step 1: Write the proportion equation
79,838.70 : 119,693.09 = 29,890.81 : x - Step 2: Convert to fraction form
79,838.70/119,693.09 = 29,890.81/x - Step 3: Cross multiply
79,838.70x = 119,693.09 × 29,890.81 - Step 4: Simplify right side
79,838.70x = 3,577,723,635.85 - Step 5: Solve for x
x = 3,577,723,635.85/79,838.70 - Step 6: Final answer
x = 44,811.90
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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.