Finding the Fourth Proportional to 115,489.08, 159,320.12 and 72,447.30
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Solution
The fourth proportional to 115,489.08, 159,320.12 and 72,447.30 is: 99,942.89
Step by Step Solution
- Step 1: Write the proportion equation
115,489.08 : 159,320.12 = 72,447.30 : x - Step 2: Convert to fraction form
115,489.08/159,320.12 = 72,447.30/x - Step 3: Cross multiply
115,489.08x = 159,320.12 × 72,447.30 - Step 4: Simplify right side
115,489.08x = 11,542,312,167.44 - Step 5: Solve for x
x = 11,542,312,167.44/115,489.08 - Step 6: Final answer
x = 99,942.89
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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.