Finding the Fourth Proportional to 77,702.09, 107,218.79 and 43,709.42
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Solution
The fourth proportional to 77,702.09, 107,218.79 and 43,709.42 is: 60,313.33
Step by Step Solution
- Step 1: Write the proportion equation
77,702.09 : 107,218.79 = 43,709.42 : x - Step 2: Convert to fraction form
77,702.09/107,218.79 = 43,709.42/x - Step 3: Cross multiply
77,702.09x = 107,218.79 × 43,709.42 - Step 4: Simplify right side
77,702.09x = 4,686,471,337.41 - Step 5: Solve for x
x = 4,686,471,337.41/77,702.09 - Step 6: Final answer
x = 60,313.33
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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.