Finding the Fourth Proportional to 81,772.14, 122,668.74 and 25,614.84
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Solution
The fourth proportional to 81,772.14, 122,668.74 and 25,614.84 is: 38,425.56
Step by Step Solution
- Step 1: Write the proportion equation
81,772.14 : 122,668.74 = 25,614.84 : x - Step 2: Convert to fraction form
81,772.14/122,668.74 = 25,614.84/x - Step 3: Cross multiply
81,772.14x = 122,668.74 × 25,614.84 - Step 4: Simplify right side
81,772.14x = 3,142,140,148.10 - Step 5: Solve for x
x = 3,142,140,148.10/81,772.14 - Step 6: Final answer
x = 38,425.56
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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.