Finding the Fourth Proportional to 81,298.38, 121,949.73 and 22,135.26
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Solution
The fourth proportional to 81,298.38, 121,949.73 and 22,135.26 is: 33,203.48
Step by Step Solution
- Step 1: Write the proportion equation
81,298.38 : 121,949.73 = 22,135.26 : x - Step 2: Convert to fraction form
81,298.38/121,949.73 = 22,135.26/x - Step 3: Cross multiply
81,298.38x = 121,949.73 × 22,135.26 - Step 4: Simplify right side
81,298.38x = 2,699,388,980.48 - Step 5: Solve for x
x = 2,699,388,980.48/81,298.38 - Step 6: Final answer
x = 33,203.48
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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.