Finding the Fourth Proportional to 91,037.63, 136,556.45 and 28,712.99
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Solution
The fourth proportional to 91,037.63, 136,556.45 and 28,712.99 is: 43,069.49
Step by Step Solution
- Step 1: Write the proportion equation
91,037.63 : 136,556.45 = 28,712.99 : x - Step 2: Convert to fraction form
91,037.63/136,556.45 = 28,712.99/x - Step 3: Cross multiply
91,037.63x = 136,556.45 × 28,712.99 - Step 4: Simplify right side
91,037.63x = 3,920,943,839.72 - Step 5: Solve for x
x = 3,920,943,839.72/91,037.63 - Step 6: Final answer
x = 43,069.49
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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.