Finding the Fourth Proportional to 86,986.99, 120,040.08 and 50,686.19
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Solution
The fourth proportional to 86,986.99, 120,040.08 and 50,686.19 is: 69,945.79
Step by Step Solution
- Step 1: Write the proportion equation
86,986.99 : 120,040.08 = 50,686.19 : x - Step 2: Convert to fraction form
86,986.99/120,040.08 = 50,686.19/x - Step 3: Cross multiply
86,986.99x = 120,040.08 × 50,686.19 - Step 4: Simplify right side
86,986.99x = 6,084,373,702.29 - Step 5: Solve for x
x = 6,084,373,702.29/86,986.99 - Step 6: Final answer
x = 69,945.79
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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.