Finding the Fourth Proportional to 76,931.84, 115,446.36 and 30,183.68
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Solution
The fourth proportional to 76,931.84, 115,446.36 and 30,183.68 is: 45,294.59
Step by Step Solution
- Step 1: Write the proportion equation
76,931.84 : 115,446.36 = 30,183.68 : x - Step 2: Convert to fraction form
76,931.84/115,446.36 = 30,183.68/x - Step 3: Cross multiply
76,931.84x = 115,446.36 × 30,183.68 - Step 4: Simplify right side
76,931.84x = 3,484,595,987.40 - Step 5: Solve for x
x = 3,484,595,987.40/76,931.84 - Step 6: Final answer
x = 45,294.59
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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.