Finding the Fourth Proportional to 75,921.20, 113,866.68 and 25,997.12
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Solution
The fourth proportional to 75,921.20, 113,866.68 and 25,997.12 is: 38,990.50
Step by Step Solution
- Step 1: Write the proportion equation
75,921.20 : 113,866.68 = 25,997.12 : x - Step 2: Convert to fraction form
75,921.20/113,866.68 = 25,997.12/x - Step 3: Cross multiply
75,921.20x = 113,866.68 × 25,997.12 - Step 4: Simplify right side
75,921.20x = 2,960,205,743.96 - Step 5: Solve for x
x = 2,960,205,743.96/75,921.20 - Step 6: Final answer
x = 38,990.50
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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.