Finding the Fourth Proportional to 92,450.40, 138,679.44 and 76,977.12
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Solution
The fourth proportional to 92,450.40, 138,679.44 and 76,977.12 is: 115,468.88
Step by Step Solution
- Step 1: Write the proportion equation
92,450.40 : 138,679.44 = 76,977.12 : x - Step 2: Convert to fraction form
92,450.40/138,679.44 = 76,977.12/x - Step 3: Cross multiply
92,450.40x = 138,679.44 × 76,977.12 - Step 4: Simplify right side
92,450.40x = 10,675,143,894.41 - Step 5: Solve for x
x = 10,675,143,894.41/92,450.40 - Step 6: Final answer
x = 115,468.88
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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.