Finding the Fourth Proportional to 77,064.36, 115,586.06 and 20,908.08
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Solution
The fourth proportional to 77,064.36, 115,586.06 and 20,908.08 is: 31,359.28
Step by Step Solution
- Step 1: Write the proportion equation
77,064.36 : 115,586.06 = 20,908.08 : x - Step 2: Convert to fraction form
77,064.36/115,586.06 = 20,908.08/x - Step 3: Cross multiply
77,064.36x = 115,586.06 × 20,908.08 - Step 4: Simplify right side
77,064.36x = 2,416,682,589.36 - Step 5: Solve for x
x = 2,416,682,589.36/77,064.36 - Step 6: Final answer
x = 31,359.28
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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.