Finding the Fourth Proportional to 74,701.20, 103,086.28 and 40,709.96
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Solution
The fourth proportional to 74,701.20, 103,086.28 and 40,709.96 is: 56,178.99
Step by Step Solution
- Step 1: Write the proportion equation
74,701.20 : 103,086.28 = 40,709.96 : x - Step 2: Convert to fraction form
74,701.20/103,086.28 = 40,709.96/x - Step 3: Cross multiply
74,701.20x = 103,086.28 × 40,709.96 - Step 4: Simplify right side
74,701.20x = 4,196,638,335.35 - Step 5: Solve for x
x = 4,196,638,335.35/74,701.20 - Step 6: Final answer
x = 56,178.99
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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.