Finding the Fourth Proportional to 85,697.28, 128,554.56 and 29,529.99
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Solution
The fourth proportional to 85,697.28, 128,554.56 and 29,529.99 is: 44,297.96
Step by Step Solution
- Step 1: Write the proportion equation
85,697.28 : 128,554.56 = 29,529.99 : x - Step 2: Convert to fraction form
85,697.28/128,554.56 = 29,529.99/x - Step 3: Cross multiply
85,697.28x = 128,554.56 × 29,529.99 - Step 4: Simplify right side
85,697.28x = 3,796,214,871.25 - Step 5: Solve for x
x = 3,796,214,871.25/85,697.28 - Step 6: Final answer
x = 44,297.96
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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.