Finding the Fourth Proportional to 81,177.24, 121,708.62 and 31,215.36
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Solution
The fourth proportional to 81,177.24, 121,708.62 and 31,215.36 is: 46,801.03
Step by Step Solution
- Step 1: Write the proportion equation
81,177.24 : 121,708.62 = 31,215.36 : x - Step 2: Convert to fraction form
81,177.24/121,708.62 = 31,215.36/x - Step 3: Cross multiply
81,177.24x = 121,708.62 × 31,215.36 - Step 4: Simplify right side
81,177.24x = 3,799,178,388.40 - Step 5: Solve for x
x = 3,799,178,388.40/81,177.24 - Step 6: Final answer
x = 46,801.03
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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.