Finding the Fourth Proportional to 87,942.52, 121,416.06 and 61,076.44
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Solution
The fourth proportional to 87,942.52, 121,416.06 and 61,076.44 is: 84,323.95
Step by Step Solution
- Step 1: Write the proportion equation
87,942.52 : 121,416.06 = 61,076.44 : x - Step 2: Convert to fraction form
87,942.52/121,416.06 = 61,076.44/x - Step 3: Cross multiply
87,942.52x = 121,416.06 × 61,076.44 - Step 4: Simplify right side
87,942.52x = 7,415,660,703.63 - Step 5: Solve for x
x = 7,415,660,703.63/87,942.52 - Step 6: Final answer
x = 84,323.95
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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.