Finding the Fourth Proportional to 87,972.54, 121,418.36 and 50,246.79
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Solution
The fourth proportional to 87,972.54, 121,418.36 and 50,246.79 is: 69,349.85
Step by Step Solution
- Step 1: Write the proportion equation
87,972.54 : 121,418.36 = 50,246.79 : x - Step 2: Convert to fraction form
87,972.54/121,418.36 = 50,246.79/x - Step 3: Cross multiply
87,972.54x = 121,418.36 × 50,246.79 - Step 4: Simplify right side
87,972.54x = 6,100,882,837.06 - Step 5: Solve for x
x = 6,100,882,837.06/87,972.54 - Step 6: Final answer
x = 69,349.85
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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.