Finding the Fourth Proportional to 92,986.64, 128,383.35 and 71,438.00
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Solution
The fourth proportional to 92,986.64, 128,383.35 and 71,438.00 is: 98,631.92
Step by Step Solution
- Step 1: Write the proportion equation
92,986.64 : 128,383.35 = 71,438.00 : x - Step 2: Convert to fraction form
92,986.64/128,383.35 = 71,438.00/x - Step 3: Cross multiply
92,986.64x = 128,383.35 × 71,438.00 - Step 4: Simplify right side
92,986.64x = 9,171,450,078.26 - Step 5: Solve for x
x = 9,171,450,078.26/92,986.64 - Step 6: Final answer
x = 98,631.92
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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.