Finding the Fourth Proportional to 74,468.32, 102,763.68 and 40,934.08
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Solution
The fourth proportional to 74,468.32, 102,763.68 and 40,934.08 is: 56,487.60
Step by Step Solution
- Step 1: Write the proportion equation
74,468.32 : 102,763.68 = 40,934.08 : x - Step 2: Convert to fraction form
74,468.32/102,763.68 = 40,934.08/x - Step 3: Cross multiply
74,468.32x = 102,763.68 × 40,934.08 - Step 4: Simplify right side
74,468.32x = 4,206,536,698.21 - Step 5: Solve for x
x = 4,206,536,698.21/74,468.32 - Step 6: Final answer
x = 56,487.60
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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.