Finding the Fourth Proportional to 81,164.40, 121,699.08 and 28,564.08
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Solution
The fourth proportional to 81,164.40, 121,699.08 and 28,564.08 is: 42,829.40
Step by Step Solution
- Step 1: Write the proportion equation
81,164.40 : 121,699.08 = 28,564.08 : x - Step 2: Convert to fraction form
81,164.40/121,699.08 = 28,564.08/x - Step 3: Cross multiply
81,164.40x = 121,699.08 × 28,564.08 - Step 4: Simplify right side
81,164.40x = 3,476,222,257.05 - Step 5: Solve for x
x = 3,476,222,257.05/81,164.40 - Step 6: Final answer
x = 42,829.40
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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.