Finding the Fourth Proportional to 81,029.35, 121,544.16 and 21,865.06
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Solution
The fourth proportional to 81,029.35, 121,544.16 and 21,865.06 is: 32,797.63
Step by Step Solution
- Step 1: Write the proportion equation
81,029.35 : 121,544.16 = 21,865.06 : x - Step 2: Convert to fraction form
81,029.35/121,544.16 = 21,865.06/x - Step 3: Cross multiply
81,029.35x = 121,544.16 × 21,865.06 - Step 4: Simplify right side
81,029.35x = 2,657,570,351.05 - Step 5: Solve for x
x = 2,657,570,351.05/81,029.35 - Step 6: Final answer
x = 32,797.63
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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.