Finding the Fourth Proportional to 81,258.90, 121,901.97 and 27,948.74
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Solution
The fourth proportional to 81,258.90, 121,901.97 and 27,948.74 is: 41,927.79
Step by Step Solution
- Step 1: Write the proportion equation
81,258.90 : 121,901.97 = 27,948.74 : x - Step 2: Convert to fraction form
81,258.90/121,901.97 = 27,948.74/x - Step 3: Cross multiply
81,258.90x = 121,901.97 × 27,948.74 - Step 4: Simplify right side
81,258.90x = 3,407,005,855.51 - Step 5: Solve for x
x = 3,407,005,855.51/81,258.90 - Step 6: Final answer
x = 41,927.79
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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.