Finding the Fourth Proportional to 87,468.10, 131,202.15 and 28,305.70
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Solution
The fourth proportional to 87,468.10, 131,202.15 and 28,305.70 is: 42,458.55
Step by Step Solution
- Step 1: Write the proportion equation
87,468.10 : 131,202.15 = 28,305.70 : x - Step 2: Convert to fraction form
87,468.10/131,202.15 = 28,305.70/x - Step 3: Cross multiply
87,468.10x = 131,202.15 × 28,305.70 - Step 4: Simplify right side
87,468.10x = 3,713,768,697.26 - Step 5: Solve for x
x = 3,713,768,697.26/87,468.10 - Step 6: Final answer
x = 42,458.55
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1.5x scale
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.