Finding the Fourth Proportional to 68,018.13, 101,987.37 and 20,619.09
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Solution
The fourth proportional to 68,018.13, 101,987.37 and 20,619.09 is: 30,916.56
Step by Step Solution
- Step 1: Write the proportion equation
68,018.13 : 101,987.37 = 20,619.09 : x - Step 2: Convert to fraction form
68,018.13/101,987.37 = 20,619.09/x - Step 3: Cross multiply
68,018.13x = 101,987.37 × 20,619.09 - Step 4: Simplify right side
68,018.13x = 2,102,886,760.89 - Step 5: Solve for x
x = 2,102,886,760.89/68,018.13 - Step 6: Final answer
x = 30,916.56
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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.