Finding the Fourth Proportional to 107,621.32, 161,430.24 and 48,415.12
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Solution
The fourth proportional to 107,621.32, 161,430.24 and 48,415.12 is: 72,621.90
Step by Step Solution
- Step 1: Write the proportion equation
107,621.32 : 161,430.24 = 48,415.12 : x - Step 2: Convert to fraction form
107,621.32/161,430.24 = 48,415.12/x - Step 3: Cross multiply
107,621.32x = 161,430.24 × 48,415.12 - Step 4: Simplify right side
107,621.32x = 7,815,664,441.23 - Step 5: Solve for x
x = 7,815,664,441.23/107,621.32 - Step 6: Final answer
x = 72,621.90
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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.