Finding the Fourth Proportional to 92,883.36, 128,218.26 and 62,709.54
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Solution
The fourth proportional to 92,883.36, 128,218.26 and 62,709.54 is: 86,565.65
Step by Step Solution
- Step 1: Write the proportion equation
92,883.36 : 128,218.26 = 62,709.54 : x - Step 2: Convert to fraction form
92,883.36/128,218.26 = 62,709.54/x - Step 3: Cross multiply
92,883.36x = 128,218.26 × 62,709.54 - Step 4: Simplify right side
92,883.36x = 8,040,508,104.20 - Step 5: Solve for x
x = 8,040,508,104.20/92,883.36 - Step 6: Final answer
x = 86,565.65
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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.