Finding the Fourth Proportional to 87,235.76, 120,382.44 and 51,425.12
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Solution
The fourth proportional to 87,235.76, 120,382.44 and 51,425.12 is: 70,964.95
Step by Step Solution
- Step 1: Write the proportion equation
87,235.76 : 120,382.44 = 51,425.12 : x - Step 2: Convert to fraction form
87,235.76/120,382.44 = 51,425.12/x - Step 3: Cross multiply
87,235.76x = 120,382.44 × 51,425.12 - Step 4: Simplify right side
87,235.76x = 6,190,681,422.89 - Step 5: Solve for x
x = 6,190,681,422.89/87,235.76 - Step 6: Final answer
x = 70,964.95
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1.5x scale
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.