Finding the Fourth Proportional to 81,246.25, 121,921.99 and 43,832.14
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Solution
The fourth proportional to 81,246.25, 121,921.99 and 43,832.14 is: 65,776.61
Step by Step Solution
- Step 1: Write the proportion equation
81,246.25 : 121,921.99 = 43,832.14 : x - Step 2: Convert to fraction form
81,246.25/121,921.99 = 43,832.14/x - Step 3: Cross multiply
81,246.25x = 121,921.99 × 43,832.14 - Step 4: Simplify right side
81,246.25x = 5,344,102,252.74 - Step 5: Solve for x
x = 5,344,102,252.74/81,246.25 - Step 6: Final answer
x = 65,776.61
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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.