Finding the Fourth Proportional to 87,972.56, 121,418.36 and 50,246.80
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Solution
The fourth proportional to 87,972.56, 121,418.36 and 50,246.80 is: 69,349.85
Step by Step Solution
- Step 1: Write the proportion equation
87,972.56 : 121,418.36 = 50,246.80 : x - Step 2: Convert to fraction form
87,972.56/121,418.36 = 50,246.80/x - Step 3: Cross multiply
87,972.56x = 121,418.36 × 50,246.80 - Step 4: Simplify right side
87,972.56x = 6,100,884,051.25 - Step 5: Solve for x
x = 6,100,884,051.25/87,972.56 - 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.