Finding the Fourth Proportional to 74,305.64, 111,455.58 and 18,903.08
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Solution
The fourth proportional to 74,305.64, 111,455.58 and 18,903.08 is: 28,353.89
Step by Step Solution
- Step 1: Write the proportion equation
74,305.64 : 111,455.58 = 18,903.08 : x - Step 2: Convert to fraction form
74,305.64/111,455.58 = 18,903.08/x - Step 3: Cross multiply
74,305.64x = 111,455.58 × 18,903.08 - Step 4: Simplify right side
74,305.64x = 2,106,853,745.19 - Step 5: Solve for x
x = 2,106,853,745.19/74,305.64 - Step 6: Final answer
x = 28,353.89
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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.