Finding the Fourth Proportional to 87,954.30, 121,370.94 and 56,119.68
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Solution
The fourth proportional to 87,954.30, 121,370.94 and 56,119.68 is: 77,441.33
Step by Step Solution
- Step 1: Write the proportion equation
87,954.30 : 121,370.94 = 56,119.68 : x - Step 2: Convert to fraction form
87,954.30/121,370.94 = 56,119.68/x - Step 3: Cross multiply
87,954.30x = 121,370.94 × 56,119.68 - Step 4: Simplify right side
87,954.30x = 6,811,298,314.10 - Step 5: Solve for x
x = 6,811,298,314.10/87,954.30 - Step 6: Final answer
x = 77,441.33
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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.