Finding the Fourth Proportional to 81,335.92, 121,995.24 and 39,202.96
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Solution
The fourth proportional to 81,335.92, 121,995.24 and 39,202.96 is: 58,800.28
Step by Step Solution
- Step 1: Write the proportion equation
81,335.92 : 121,995.24 = 39,202.96 : x - Step 2: Convert to fraction form
81,335.92/121,995.24 = 39,202.96/x - Step 3: Cross multiply
81,335.92x = 121,995.24 × 39,202.96 - Step 4: Simplify right side
81,335.92x = 4,782,574,513.91 - Step 5: Solve for x
x = 4,782,574,513.91/81,335.92 - Step 6: Final answer
x = 58,800.28
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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.