Finding the Fourth Proportional to 75,030.21, 103,481.90 and 63,737.09
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Solution
The fourth proportional to 75,030.21, 103,481.90 and 63,737.09 is: 87,906.39
Step by Step Solution
- Step 1: Write the proportion equation
75,030.21 : 103,481.90 = 63,737.09 : x - Step 2: Convert to fraction form
75,030.21/103,481.90 = 63,737.09/x - Step 3: Cross multiply
75,030.21x = 103,481.90 × 63,737.09 - Step 4: Simplify right side
75,030.21x = 6,595,635,173.67 - Step 5: Solve for x
x = 6,595,635,173.67/75,030.21 - Step 6: Final answer
x = 87,906.39
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1.5x scale
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.