Finding the Fourth Proportional to 85,777.74, 128,676.11 and 29,611.48
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Solution
The fourth proportional to 85,777.74, 128,676.11 and 29,611.48 is: 44,420.50
Step by Step Solution
- Step 1: Write the proportion equation
85,777.74 : 128,676.11 = 29,611.48 : x - Step 2: Convert to fraction form
85,777.74/128,676.11 = 29,611.48/x - Step 3: Cross multiply
85,777.74x = 128,676.11 × 29,611.48 - Step 4: Simplify right side
85,777.74x = 3,810,290,057.74 - Step 5: Solve for x
x = 3,810,290,057.74/85,777.74 - Step 6: Final answer
x = 44,420.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.