Finding the Fourth Proportional to 74,686.60, 103,067.04 and 40,697.08
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Solution
The fourth proportional to 74,686.60, 103,067.04 and 40,697.08 is: 56,161.72
Step by Step Solution
- Step 1: Write the proportion equation
74,686.60 : 103,067.04 = 40,697.08 : x - Step 2: Convert to fraction form
74,686.60/103,067.04 = 40,697.08/x - Step 3: Cross multiply
74,686.60x = 103,067.04 × 40,697.08 - Step 4: Simplify right side
74,686.60x = 4,194,527,572.24 - Step 5: Solve for x
x = 4,194,527,572.24/74,686.60 - Step 6: Final answer
x = 56,161.72
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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.