Finding the Fourth Proportional to 74,407.68, 102,680.85 and 40,415.76
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Solution
The fourth proportional to 74,407.68, 102,680.85 and 40,415.76 is: 55,772.80
Step by Step Solution
- Step 1: Write the proportion equation
74,407.68 : 102,680.85 = 40,415.76 : x - Step 2: Convert to fraction form
74,407.68/102,680.85 = 40,415.76/x - Step 3: Cross multiply
74,407.68x = 102,680.85 × 40,415.76 - Step 4: Simplify right side
74,407.68x = 4,149,924,590.20 - Step 5: Solve for x
x = 4,149,924,590.20/74,407.68 - Step 6: Final answer
x = 55,772.80
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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.