Finding the Fourth Proportional to 75,271.38, 112,907.12 and 19,115.70
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Solution
The fourth proportional to 75,271.38, 112,907.12 and 19,115.70 is: 28,673.56
Step by Step Solution
- Step 1: Write the proportion equation
75,271.38 : 112,907.12 = 19,115.70 : x - Step 2: Convert to fraction form
75,271.38/112,907.12 = 19,115.70/x - Step 3: Cross multiply
75,271.38x = 112,907.12 × 19,115.70 - Step 4: Simplify right side
75,271.38x = 2,158,298,114.80 - Step 5: Solve for x
x = 2,158,298,114.80/75,271.38 - Step 6: Final answer
x = 28,673.56
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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.