Finding the Fourth Proportional to 77,108.13, 115,662.99 and 27,178.92
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Solution
The fourth proportional to 77,108.13, 115,662.99 and 27,178.92 is: 40,768.66
Step by Step Solution
- Step 1: Write the proportion equation
77,108.13 : 115,662.99 = 27,178.92 : x - Step 2: Convert to fraction form
77,108.13/115,662.99 = 27,178.92/x - Step 3: Cross multiply
77,108.13x = 115,662.99 × 27,178.92 - Step 4: Simplify right side
77,108.13x = 3,143,595,152.17 - Step 5: Solve for x
x = 3,143,595,152.17/77,108.13 - Step 6: Final answer
x = 40,768.66
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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.