Finding the Fourth Proportional to 77,043.70, 115,563.12 and 45,668.76
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Solution
The fourth proportional to 77,043.70, 115,563.12 and 45,668.76 is: 68,501.70
Step by Step Solution
- Step 1: Write the proportion equation
77,043.70 : 115,563.12 = 45,668.76 : x - Step 2: Convert to fraction form
77,043.70/115,563.12 = 45,668.76/x - Step 3: Cross multiply
77,043.70x = 115,563.12 × 45,668.76 - Step 4: Simplify right side
77,043.70x = 5,277,624,392.13 - Step 5: Solve for x
x = 5,277,624,392.13/77,043.70 - Step 6: Final answer
x = 68,501.70
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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.