Finding the Fourth Proportional to 81,003.84, 121,500.36 and 38,914.08
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Solution
The fourth proportional to 81,003.84, 121,500.36 and 38,914.08 is: 58,368.53
Step by Step Solution
- Step 1: Write the proportion equation
81,003.84 : 121,500.36 = 38,914.08 : x - Step 2: Convert to fraction form
81,003.84/121,500.36 = 38,914.08/x - Step 3: Cross multiply
81,003.84x = 121,500.36 × 38,914.08 - Step 4: Simplify right side
81,003.84x = 4,728,074,729.07 - Step 5: Solve for x
x = 4,728,074,729.07/81,003.84 - Step 6: Final answer
x = 58,368.53
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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.