Finding the Fourth Proportional to 87,890.25, 121,288.49 and 47,604.00
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Solution
The fourth proportional to 87,890.25, 121,288.49 and 47,604.00 is: 65,693.49
Step by Step Solution
- Step 1: Write the proportion equation
87,890.25 : 121,288.49 = 47,604.00 : x - Step 2: Convert to fraction form
87,890.25/121,288.49 = 47,604.00/x - Step 3: Cross multiply
87,890.25x = 121,288.49 × 47,604.00 - Step 4: Simplify right side
87,890.25x = 5,773,816,671.52 - Step 5: Solve for x
x = 5,773,816,671.52/87,890.25 - Step 6: Final answer
x = 65,693.49
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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.