Finding the Fourth Proportional to 86,421.30, 129,610.35 and 33,101.70
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Solution
The fourth proportional to 86,421.30, 129,610.35 and 33,101.70 is: 49,644.28
Step by Step Solution
- Step 1: Write the proportion equation
86,421.30 : 129,610.35 = 33,101.70 : x - Step 2: Convert to fraction form
86,421.30/129,610.35 = 33,101.70/x - Step 3: Cross multiply
86,421.30x = 129,610.35 × 33,101.70 - Step 4: Simplify right side
86,421.30x = 4,290,322,922.60 - Step 5: Solve for x
x = 4,290,322,922.60/86,421.30 - Step 6: Final answer
x = 49,644.28
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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.