Finding the Fourth Proportional to 98,289.22, 135,638.42 and 55,847.75
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Solution
The fourth proportional to 98,289.22, 135,638.42 and 55,847.75 is: 77,069.49
Step by Step Solution
- Step 1: Write the proportion equation
98,289.22 : 135,638.42 = 55,847.75 : x - Step 2: Convert to fraction form
98,289.22/135,638.42 = 55,847.75/x - Step 3: Cross multiply
98,289.22x = 135,638.42 × 55,847.75 - Step 4: Simplify right side
98,289.22x = 7,575,100,376.09 - Step 5: Solve for x
x = 7,575,100,376.09/98,289.22 - Step 6: Final answer
x = 77,069.49
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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.