Finding the Fourth Proportional to 81,349.14, 122,102.45 and 39,258.80
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Solution
The fourth proportional to 81,349.14, 122,102.45 and 39,258.80 is: 58,926.19
Step by Step Solution
- Step 1: Write the proportion equation
81,349.14 : 122,102.45 = 39,258.80 : x - Step 2: Convert to fraction form
81,349.14/122,102.45 = 39,258.80/x - Step 3: Cross multiply
81,349.14x = 122,102.45 × 39,258.80 - Step 4: Simplify right side
81,349.14x = 4,793,594,857.25 - Step 5: Solve for x
x = 4,793,594,857.25/81,349.14 - Step 6: Final answer
x = 58,926.19
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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.