Finding the Fourth Proportional to 72,631.28, 108,988.68 and 30,507.68
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Solution
The fourth proportional to 72,631.28, 108,988.68 and 30,507.68 is: 45,779.06
Step by Step Solution
- Step 1: Write the proportion equation
72,631.28 : 108,988.68 = 30,507.68 : x - Step 2: Convert to fraction form
72,631.28/108,988.68 = 30,507.68/x - Step 3: Cross multiply
72,631.28x = 108,988.68 × 30,507.68 - Step 4: Simplify right side
72,631.28x = 3,324,991,773.06 - Step 5: Solve for x
x = 3,324,991,773.06/72,631.28 - Step 6: Final answer
x = 45,779.06
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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.