Finding the Fourth Proportional to 81,027.53, 121,541.29 and 21,863.20
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Solution
The fourth proportional to 81,027.53, 121,541.29 and 21,863.20 is: 32,794.79
Step by Step Solution
- Step 1: Write the proportion equation
81,027.53 : 121,541.29 = 21,863.20 : x - Step 2: Convert to fraction form
81,027.53/121,541.29 = 21,863.20/x - Step 3: Cross multiply
81,027.53x = 121,541.29 × 21,863.20 - Step 4: Simplify right side
81,027.53x = 2,657,280,945.13 - Step 5: Solve for x
x = 2,657,280,945.13/81,027.53 - Step 6: Final answer
x = 32,794.79
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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.