Finding the Fourth Proportional to 86,953.46, 130,421.97 and 27,778.70
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Solution
The fourth proportional to 86,953.46, 130,421.97 and 27,778.70 is: 41,665.42
Step by Step Solution
- Step 1: Write the proportion equation
86,953.46 : 130,421.97 = 27,778.70 : x - Step 2: Convert to fraction form
86,953.46/130,421.97 = 27,778.70/x - Step 3: Cross multiply
86,953.46x = 130,421.97 × 27,778.70 - Step 4: Simplify right side
86,953.46x = 3,622,952,125.93 - Step 5: Solve for x
x = 3,622,952,125.93/86,953.46 - Step 6: Final answer
x = 41,665.42
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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.