Finding the Fourth Proportional to 76,935.80, 115,455.30 and 27,015.80
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Solution
The fourth proportional to 76,935.80, 115,455.30 and 27,015.80 is: 40,541.82
Step by Step Solution
- Step 1: Write the proportion equation
76,935.80 : 115,455.30 = 27,015.80 : x - Step 2: Convert to fraction form
76,935.80/115,455.30 = 27,015.80/x - Step 3: Cross multiply
76,935.80x = 115,455.30 × 27,015.80 - Step 4: Simplify right side
76,935.80x = 3,119,117,293.74 - Step 5: Solve for x
x = 3,119,117,293.74/76,935.80 - Step 6: Final answer
x = 40,541.82
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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.