Finding the Fourth Proportional to 75,619.20, 113,420.14 and 20,219.52
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Solution
The fourth proportional to 75,619.20, 113,420.14 and 20,219.52 is: 30,326.96
Step by Step Solution
- Step 1: Write the proportion equation
75,619.20 : 113,420.14 = 20,219.52 : x - Step 2: Convert to fraction form
75,619.20/113,420.14 = 20,219.52/x - Step 3: Cross multiply
75,619.20x = 113,420.14 × 20,219.52 - Step 4: Simplify right side
75,619.20x = 2,293,300,789.13 - Step 5: Solve for x
x = 2,293,300,789.13/75,619.20 - Step 6: Final answer
x = 30,326.96
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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.