Finding the Fourth Proportional to 81,206.44, 121,783.74 and 25,789.48
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Solution
The fourth proportional to 81,206.44, 121,783.74 and 25,789.48 is: 38,675.99
Step by Step Solution
- Step 1: Write the proportion equation
81,206.44 : 121,783.74 = 25,789.48 : x - Step 2: Convert to fraction form
81,206.44/121,783.74 = 25,789.48/x - Step 3: Cross multiply
81,206.44x = 121,783.74 × 25,789.48 - Step 4: Simplify right side
81,206.44x = 3,140,739,327.06 - Step 5: Solve for x
x = 3,140,739,327.06/81,206.44 - Step 6: Final answer
x = 38,675.99
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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.