Finding the Fourth Proportional to 98,449.20, 135,859.86 and 53,737.20
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Solution
The fourth proportional to 98,449.20, 135,859.86 and 53,737.20 is: 74,157.32
Step by Step Solution
- Step 1: Write the proportion equation
98,449.20 : 135,859.86 = 53,737.20 : x - Step 2: Convert to fraction form
98,449.20/135,859.86 = 53,737.20/x - Step 3: Cross multiply
98,449.20x = 135,859.86 × 53,737.20 - Step 4: Simplify right side
98,449.20x = 7,300,728,468.79 - Step 5: Solve for x
x = 7,300,728,468.79/98,449.20 - Step 6: Final answer
x = 74,157.32
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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.