Finding the Fourth Proportional to 87,839.08, 121,117.60 and 69,934.84
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Solution
The fourth proportional to 87,839.08, 121,117.60 and 69,934.84 is: 96,430.20
Step by Step Solution
- Step 1: Write the proportion equation
87,839.08 : 121,117.60 = 69,934.84 : x - Step 2: Convert to fraction form
87,839.08/121,117.60 = 69,934.84/x - Step 3: Cross multiply
87,839.08x = 121,117.60 × 69,934.84 - Step 4: Simplify right side
87,839.08x = 8,470,339,977.18 - Step 5: Solve for x
x = 8,470,339,977.18/87,839.08 - Step 6: Final answer
x = 96,430.20
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1.5x scale
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.