Finding the Fourth Proportional to 76,701.36, 114,977.76 and 39,279.06
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Solution
The fourth proportional to 76,701.36, 114,977.76 and 39,279.06 is: 58,880.55
Step by Step Solution
- Step 1: Write the proportion equation
76,701.36 : 114,977.76 = 39,279.06 : x - Step 2: Convert to fraction form
76,701.36/114,977.76 = 39,279.06/x - Step 3: Cross multiply
76,701.36x = 114,977.76 × 39,279.06 - Step 4: Simplify right side
76,701.36x = 4,516,218,333.71 - Step 5: Solve for x
x = 4,516,218,333.71/76,701.36 - Step 6: Final answer
x = 58,880.55
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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.