Finding the Fourth Proportional to 92,877.12, 127,879.08 and 81,964.08
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Solution
The fourth proportional to 92,877.12, 127,879.08 and 81,964.08 is: 112,853.32
Step by Step Solution
- Step 1: Write the proportion equation
92,877.12 : 127,879.08 = 81,964.08 : x - Step 2: Convert to fraction form
92,877.12/127,879.08 = 81,964.08/x - Step 3: Cross multiply
92,877.12x = 127,879.08 × 81,964.08 - Step 4: Simplify right side
92,877.12x = 10,481,491,143.45 - Step 5: Solve for x
x = 10,481,491,143.45/92,877.12 - Step 6: Final answer
x = 112,853.32
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1.5x scale
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.