Finding the Fourth Proportional to 87,290.51, 120,457.51 and 53,355.81
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Solution
The fourth proportional to 87,290.51, 120,457.51 and 53,355.81 is: 73,628.95
Step by Step Solution
- Step 1: Write the proportion equation
87,290.51 : 120,457.51 = 53,355.81 : x - Step 2: Convert to fraction form
87,290.51/120,457.51 = 53,355.81/x - Step 3: Cross multiply
87,290.51x = 120,457.51 × 53,355.81 - Step 4: Simplify right side
87,290.51x = 6,427,107,883.24 - Step 5: Solve for x
x = 6,427,107,883.24/87,290.51 - Step 6: Final answer
x = 73,628.95
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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.