Finding the Fourth Proportional to 98,051.68, 135,312.64 and 55,609.28
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Solution
The fourth proportional to 98,051.68, 135,312.64 and 55,609.28 is: 76,741.56
Step by Step Solution
- Step 1: Write the proportion equation
98,051.68 : 135,312.64 = 55,609.28 : x - Step 2: Convert to fraction form
98,051.68/135,312.64 = 55,609.28/x - Step 3: Cross multiply
98,051.68x = 135,312.64 × 55,609.28 - Step 4: Simplify right side
98,051.68x = 7,524,638,485.30 - Step 5: Solve for x
x = 7,524,638,485.30/98,051.68 - Step 6: Final answer
x = 76,741.56
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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.