Finding the Fourth Proportional to 77,147.84, 115,731.01 and 27,217.62
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Solution
The fourth proportional to 77,147.84, 115,731.01 and 27,217.62 is: 40,829.69
Step by Step Solution
- Step 1: Write the proportion equation
77,147.84 : 115,731.01 = 27,217.62 : x - Step 2: Convert to fraction form
77,147.84/115,731.01 = 27,217.62/x - Step 3: Cross multiply
77,147.84x = 115,731.01 × 27,217.62 - Step 4: Simplify right side
77,147.84x = 3,149,922,686.42 - Step 5: Solve for x
x = 3,149,922,686.42/77,147.84 - Step 6: Final answer
x = 40,829.69
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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.