Finding the Fourth Proportional to 87,246.88, 130,891.20 and 28,088.08
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Solution
The fourth proportional to 87,246.88, 130,891.20 and 28,088.08 is: 42,138.84
Step by Step Solution
- Step 1: Write the proportion equation
87,246.88 : 130,891.20 = 28,088.08 : x - Step 2: Convert to fraction form
87,246.88/130,891.20 = 28,088.08/x - Step 3: Cross multiply
87,246.88x = 130,891.20 × 28,088.08 - Step 4: Simplify right side
87,246.88x = 3,676,482,496.90 - Step 5: Solve for x
x = 3,676,482,496.90/87,246.88 - Step 6: Final answer
x = 42,138.84
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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.