Finding the Fourth Proportional to 103,630.08, 155,421.84 and 40,451.76
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Solution
The fourth proportional to 103,630.08, 155,421.84 and 40,451.76 is: 60,668.55
Step by Step Solution
- Step 1: Write the proportion equation
103,630.08 : 155,421.84 = 40,451.76 : x - Step 2: Convert to fraction form
103,630.08/155,421.84 = 40,451.76/x - Step 3: Cross multiply
103,630.08x = 155,421.84 × 40,451.76 - Step 4: Simplify right side
103,630.08x = 6,287,086,970.44 - Step 5: Solve for x
x = 6,287,086,970.44/103,630.08 - Step 6: Final answer
x = 60,668.55
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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.