Finding the Fourth Proportional to 81,106.44, 121,664.52 and 38,995.08
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Solution
The fourth proportional to 81,106.44, 121,664.52 and 38,995.08 is: 58,494.96
Step by Step Solution
- Step 1: Write the proportion equation
81,106.44 : 121,664.52 = 38,995.08 : x - Step 2: Convert to fraction form
81,106.44/121,664.52 = 38,995.08/x - Step 3: Cross multiply
81,106.44x = 121,664.52 × 38,995.08 - Step 4: Simplify right side
81,106.44x = 4,744,317,690.56 - Step 5: Solve for x
x = 4,744,317,690.56/81,106.44 - Step 6: Final answer
x = 58,494.96
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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.