Finding the Fourth Proportional to 85,337.21, 128,020.84 and 29,164.12
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Solution
The fourth proportional to 85,337.21, 128,020.84 and 29,164.12 is: 43,751.31
Step by Step Solution
- Step 1: Write the proportion equation
85,337.21 : 128,020.84 = 29,164.12 : x - Step 2: Convert to fraction form
85,337.21/128,020.84 = 29,164.12/x - Step 3: Cross multiply
85,337.21x = 128,020.84 × 29,164.12 - Step 4: Simplify right side
85,337.21x = 3,733,614,747.30 - Step 5: Solve for x
x = 3,733,614,747.30/85,337.21 - Step 6: Final answer
x = 43,751.31
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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.