Finding the Fourth Proportional to 81,284.06, 121,937.73 and 25,129.05
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Solution
The fourth proportional to 81,284.06, 121,937.73 and 25,129.05 is: 37,697.17
Step by Step Solution
- Step 1: Write the proportion equation
81,284.06 : 121,937.73 = 25,129.05 : x - Step 2: Convert to fraction form
81,284.06/121,937.73 = 25,129.05/x - Step 3: Cross multiply
81,284.06x = 121,937.73 × 25,129.05 - Step 4: Simplify right side
81,284.06x = 3,064,179,188.41 - Step 5: Solve for x
x = 3,064,179,188.41/81,284.06 - Step 6: Final answer
x = 37,697.17
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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.