Finding the Fourth Proportional to 76,434.60, 114,624.62 and 31,442.81
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Solution
The fourth proportional to 76,434.60, 114,624.62 and 31,442.81 is: 47,152.99
Step by Step Solution
- Step 1: Write the proportion equation
76,434.60 : 114,624.62 = 31,442.81 : x - Step 2: Convert to fraction form
76,434.60/114,624.62 = 31,442.81/x - Step 3: Cross multiply
76,434.60x = 114,624.62 × 31,442.81 - Step 4: Simplify right side
76,434.60x = 3,604,120,277.33 - Step 5: Solve for x
x = 3,604,120,277.33/76,434.60 - Step 6: Final answer
x = 47,152.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.