Finding the Fourth Proportional to 86,801.68, 130,212.92 and 30,630.19
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Solution
The fourth proportional to 86,801.68, 130,212.92 and 30,630.19 is: 45,948.95
Step by Step Solution
- Step 1: Write the proportion equation
86,801.68 : 130,212.92 = 30,630.19 : x - Step 2: Convert to fraction form
86,801.68/130,212.92 = 30,630.19/x - Step 3: Cross multiply
86,801.68x = 130,212.92 × 30,630.19 - Step 4: Simplify right side
86,801.68x = 3,988,446,231.10 - Step 5: Solve for x
x = 3,988,446,231.10/86,801.68 - Step 6: Final answer
x = 45,948.95
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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.