Finding the Fourth Proportional to 83,980.02, 125,987.80 and 27,816.95
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Solution
The fourth proportional to 83,980.02, 125,987.80 and 27,816.95 is: 41,731.31
Step by Step Solution
- Step 1: Write the proportion equation
83,980.02 : 125,987.80 = 27,816.95 : x - Step 2: Convert to fraction form
83,980.02/125,987.80 = 27,816.95/x - Step 3: Cross multiply
83,980.02x = 125,987.80 × 27,816.95 - Step 4: Simplify right side
83,980.02x = 3,504,596,333.21 - Step 5: Solve for x
x = 3,504,596,333.21/83,980.02 - Step 6: Final answer
x = 41,731.31
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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.