Finding the Fourth Proportional to 85,698.28, 128,556.06 and 29,530.99
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Solution
The fourth proportional to 85,698.28, 128,556.06 and 29,530.99 is: 44,299.46
Step by Step Solution
- Step 1: Write the proportion equation
85,698.28 : 128,556.06 = 29,530.99 : x - Step 2: Convert to fraction form
85,698.28/128,556.06 = 29,530.99/x - Step 3: Cross multiply
85,698.28x = 128,556.06 × 29,530.99 - Step 4: Simplify right side
85,698.28x = 3,796,387,722.30 - Step 5: Solve for x
x = 3,796,387,722.30/85,698.28 - Step 6: Final answer
x = 44,299.46
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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.