Finding the Fourth Proportional to 81,739.53, 122,609.12 and 22,575.03
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Solution
The fourth proportional to 81,739.53, 122,609.12 and 22,575.03 is: 33,862.50
Step by Step Solution
- Step 1: Write the proportion equation
81,739.53 : 122,609.12 = 22,575.03 : x - Step 2: Convert to fraction form
81,739.53/122,609.12 = 22,575.03/x - Step 3: Cross multiply
81,739.53x = 122,609.12 × 22,575.03 - Step 4: Simplify right side
81,739.53x = 2,767,904,449.40 - Step 5: Solve for x
x = 2,767,904,449.40/81,739.53 - Step 6: Final answer
x = 33,862.50
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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.