Finding the Fourth Proportional to 77,028.12, 115,546.30 and 21,628.44
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Solution
The fourth proportional to 77,028.12, 115,546.30 and 21,628.44 is: 32,443.82
Step by Step Solution
- Step 1: Write the proportion equation
77,028.12 : 115,546.30 = 21,628.44 : x - Step 2: Convert to fraction form
77,028.12/115,546.30 = 21,628.44/x - Step 3: Cross multiply
77,028.12x = 115,546.30 × 21,628.44 - Step 4: Simplify right side
77,028.12x = 2,499,086,216.77 - Step 5: Solve for x
x = 2,499,086,216.77/77,028.12 - Step 6: Final answer
x = 32,443.82
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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.