Finding the Fourth Proportional to 86,728.21, 130,113.02 and 27,563.98
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Solution
The fourth proportional to 86,728.21, 130,113.02 and 27,563.98 is: 41,352.55
Step by Step Solution
- Step 1: Write the proportion equation
86,728.21 : 130,113.02 = 27,563.98 : x - Step 2: Convert to fraction form
86,728.21/130,113.02 = 27,563.98/x - Step 3: Cross multiply
86,728.21x = 130,113.02 × 27,563.98 - Step 4: Simplify right side
86,728.21x = 3,586,432,681.02 - Step 5: Solve for x
x = 3,586,432,681.02/86,728.21 - Step 6: Final answer
x = 41,352.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.