Finding the Fourth Proportional to 75,331.40, 112,869.36 and 50,013.20
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Solution
The fourth proportional to 75,331.40, 112,869.36 and 50,013.20 is: 74,934.99
Step by Step Solution
- Step 1: Write the proportion equation
75,331.40 : 112,869.36 = 50,013.20 : x - Step 2: Convert to fraction form
75,331.40/112,869.36 = 50,013.20/x - Step 3: Cross multiply
75,331.40x = 112,869.36 × 50,013.20 - Step 4: Simplify right side
75,331.40x = 5,644,957,875.55 - Step 5: Solve for x
x = 5,644,957,875.55/75,331.40 - Step 6: Final answer
x = 74,934.99
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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.