Finding the Fourth Proportional to 75,431.77, 113,147.65 and 19,271.99
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Solution
The fourth proportional to 75,431.77, 113,147.65 and 19,271.99 is: 28,907.99
Step by Step Solution
- Step 1: Write the proportion equation
75,431.77 : 113,147.65 = 19,271.99 : x - Step 2: Convert to fraction form
75,431.77/113,147.65 = 19,271.99/x - Step 3: Cross multiply
75,431.77x = 113,147.65 × 19,271.99 - Step 4: Simplify right side
75,431.77x = 2,180,580,686.28 - Step 5: Solve for x
x = 2,180,580,686.28/75,431.77 - Step 6: Final answer
x = 28,907.99
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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.