Finding the Fourth Proportional to 87,775.93, 121,130.79 and 47,489.67
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Solution
The fourth proportional to 87,775.93, 121,130.79 and 47,489.67 is: 65,535.74
Step by Step Solution
- Step 1: Write the proportion equation
87,775.93 : 121,130.79 = 47,489.67 : x - Step 2: Convert to fraction form
87,775.93/121,130.79 = 47,489.67/x - Step 3: Cross multiply
87,775.93x = 121,130.79 × 47,489.67 - Step 4: Simplify right side
87,775.93x = 5,752,460,638.29 - Step 5: Solve for x
x = 5,752,460,638.29/87,775.93 - Step 6: Final answer
x = 65,535.74
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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.