Finding the Fourth Proportional to 74,722.20, 103,115.30 and 40,730.98
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Solution
The fourth proportional to 74,722.20, 103,115.30 and 40,730.98 is: 56,208.02
Step by Step Solution
- Step 1: Write the proportion equation
74,722.20 : 103,115.30 = 40,730.98 : x - Step 2: Convert to fraction form
74,722.20/103,115.30 = 40,730.98/x - Step 3: Cross multiply
74,722.20x = 103,115.30 × 40,730.98 - Step 4: Simplify right side
74,722.20x = 4,199,987,221.99 - Step 5: Solve for x
x = 4,199,987,221.99/74,722.20 - Step 6: Final answer
x = 56,208.02
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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.