Finding the Fourth Proportional to 77,103.36, 106,453.44 and 49,930.56
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Solution
The fourth proportional to 77,103.36, 106,453.44 and 49,930.56 is: 68,937.07
Step by Step Solution
- Step 1: Write the proportion equation
77,103.36 : 106,453.44 = 49,930.56 : x - Step 2: Convert to fraction form
77,103.36/106,453.44 = 49,930.56/x - Step 3: Cross multiply
77,103.36x = 106,453.44 × 49,930.56 - Step 4: Simplify right side
77,103.36x = 5,315,279,873.13 - Step 5: Solve for x
x = 5,315,279,873.13/77,103.36 - Step 6: Final answer
x = 68,937.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.