Finding the Fourth Proportional to 68,760.18, 103,140.36 and 18,840.70
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Solution
The fourth proportional to 68,760.18, 103,140.36 and 18,840.70 is: 28,261.07
Step by Step Solution
- Step 1: Write the proportion equation
68,760.18 : 103,140.36 = 18,840.70 : x - Step 2: Convert to fraction form
68,760.18/103,140.36 = 18,840.70/x - Step 3: Cross multiply
68,760.18x = 103,140.36 × 18,840.70 - Step 4: Simplify right side
68,760.18x = 1,943,236,580.65 - Step 5: Solve for x
x = 1,943,236,580.65/68,760.18 - Step 6: Final answer
x = 28,261.07
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1.5x scale
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.