Finding the Fourth Proportional to 75,412.80, 112,299.13 and 74,584.49
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Solution
The fourth proportional to 75,412.80, 112,299.13 and 74,584.49 is: 111,065.67
Step by Step Solution
- Step 1: Write the proportion equation
75,412.80 : 112,299.13 = 74,584.49 : x - Step 2: Convert to fraction form
75,412.80/112,299.13 = 74,584.49/x - Step 3: Cross multiply
75,412.80x = 112,299.13 × 74,584.49 - Step 4: Simplify right side
75,412.80x = 8,375,772,870.23 - Step 5: Solve for x
x = 8,375,772,870.23/75,412.80 - Step 6: Final answer
x = 111,065.67
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.