Finding the Fourth Proportional to 97,919.24, 135,128.20 and 55,485.88
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Solution
The fourth proportional to 97,919.24, 135,128.20 and 55,485.88 is: 76,570.32
Step by Step Solution
- Step 1: Write the proportion equation
97,919.24 : 135,128.20 = 55,485.88 : x - Step 2: Convert to fraction form
97,919.24/135,128.20 = 55,485.88/x - Step 3: Cross multiply
97,919.24x = 135,128.20 × 55,485.88 - Step 4: Simplify right side
97,919.24x = 7,497,707,089.82 - Step 5: Solve for x
x = 7,497,707,089.82/97,919.24 - Step 6: Final answer
x = 76,570.32
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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.