Finding the Fourth Proportional to 77,085.97, 115,638.22 and 27,155.75
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Solution
The fourth proportional to 77,085.97, 115,638.22 and 27,155.75 is: 40,736.88
Step by Step Solution
- Step 1: Write the proportion equation
77,085.97 : 115,638.22 = 27,155.75 : x - Step 2: Convert to fraction form
77,085.97/115,638.22 = 27,155.75/x - Step 3: Cross multiply
77,085.97x = 115,638.22 × 27,155.75 - Step 4: Simplify right side
77,085.97x = 3,140,241,878.80 - Step 5: Solve for x
x = 3,140,241,878.80/77,085.97 - Step 6: Final answer
x = 40,736.88
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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.