Finding the Fourth Proportional to 75,431.16, 113,146.73 and 19,271.39
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Solution
The fourth proportional to 75,431.16, 113,146.73 and 19,271.39 is: 28,907.07
Step by Step Solution
- Step 1: Write the proportion equation
75,431.16 : 113,146.73 = 19,271.39 : x - Step 2: Convert to fraction form
75,431.16/113,146.73 = 19,271.39/x - Step 3: Cross multiply
75,431.16x = 113,146.73 × 19,271.39 - Step 4: Simplify right side
75,431.16x = 2,180,494,098.96 - Step 5: Solve for x
x = 2,180,494,098.96/75,431.16 - Step 6: Final answer
x = 28,907.07
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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.