Finding the Fourth Proportional to 81,412.44, 121,959.66 and 56,107.46
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Solution
The fourth proportional to 81,412.44, 121,959.66 and 56,107.46 is: 84,051.61
Step by Step Solution
- Step 1: Write the proportion equation
81,412.44 : 121,959.66 = 56,107.46 : x - Step 2: Convert to fraction form
81,412.44/121,959.66 = 56,107.46/x - Step 3: Cross multiply
81,412.44x = 121,959.66 × 56,107.46 - Step 4: Simplify right side
81,412.44x = 6,842,846,745.06 - Step 5: Solve for x
x = 6,842,846,745.06/81,412.44 - Step 6: Final answer
x = 84,051.61
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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.