Finding the Fourth Proportional to 79,387.00, 109,554.21 and 47,128.08
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Solution
The fourth proportional to 79,387.00, 109,554.21 and 47,128.08 is: 65,036.85
Step by Step Solution
- Step 1: Write the proportion equation
79,387.00 : 109,554.21 = 47,128.08 : x - Step 2: Convert to fraction form
79,387.00/109,554.21 = 47,128.08/x - Step 3: Cross multiply
79,387.00x = 109,554.21 × 47,128.08 - Step 4: Simplify right side
79,387.00x = 5,163,080,094.21 - Step 5: Solve for x
x = 5,163,080,094.21/79,387.00 - Step 6: Final answer
x = 65,036.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.