Finding the Fourth Proportional to 68,762.18, 103,143.36 and 18,842.70
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Solution
The fourth proportional to 68,762.18, 103,143.36 and 18,842.70 is: 28,264.07
Step by Step Solution
- Step 1: Write the proportion equation
68,762.18 : 103,143.36 = 18,842.70 : x - Step 2: Convert to fraction form
68,762.18/103,143.36 = 18,842.70/x - Step 3: Cross multiply
68,762.18x = 103,143.36 × 18,842.70 - Step 4: Simplify right side
68,762.18x = 1,943,499,389.47 - Step 5: Solve for x
x = 1,943,499,389.47/68,762.18 - Step 6: Final answer
x = 28,264.07
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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.