Finding the Fourth Proportional to 81,080.42, 121,675.99 and 28,489.91
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Solution
The fourth proportional to 81,080.42, 121,675.99 and 28,489.91 is: 42,754.32
Step by Step Solution
- Step 1: Write the proportion equation
81,080.42 : 121,675.99 = 28,489.91 : x - Step 2: Convert to fraction form
81,080.42/121,675.99 = 28,489.91/x - Step 3: Cross multiply
81,080.42x = 121,675.99 × 28,489.91 - Step 4: Simplify right side
81,080.42x = 3,466,538,004.26 - Step 5: Solve for x
x = 3,466,538,004.26/81,080.42 - Step 6: Final answer
x = 42,754.32
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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.