Finding the Fourth Proportional to 74,913.18, 103,377.84 and 40,921.12
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Solution
The fourth proportional to 74,913.18, 103,377.84 and 40,921.12 is: 56,469.86
Step by Step Solution
- Step 1: Write the proportion equation
74,913.18 : 103,377.84 = 40,921.12 : x - Step 2: Convert to fraction form
74,913.18/103,377.84 = 40,921.12/x - Step 3: Cross multiply
74,913.18x = 103,377.84 × 40,921.12 - Step 4: Simplify right side
74,913.18x = 4,230,336,995.98 - Step 5: Solve for x
x = 4,230,336,995.98/74,913.18 - Step 6: Final answer
x = 56,469.86
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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.