Finding the Fourth Proportional to 87,182.64, 120,312.12 and 48,936.84
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Solution
The fourth proportional to 87,182.64, 120,312.12 and 48,936.84 is: 67,532.88
Step by Step Solution
- Step 1: Write the proportion equation
87,182.64 : 120,312.12 = 48,936.84 : x - Step 2: Convert to fraction form
87,182.64/120,312.12 = 48,936.84/x - Step 3: Cross multiply
87,182.64x = 120,312.12 × 48,936.84 - Step 4: Simplify right side
87,182.64x = 5,887,694,966.50 - Step 5: Solve for x
x = 5,887,694,966.50/87,182.64 - Step 6: Final answer
x = 67,532.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.