Finding the Fourth Proportional to 87,862.38, 121,251.09 and 47,577.06
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Solution
The fourth proportional to 87,862.38, 121,251.09 and 47,577.06 is: 65,656.89
Step by Step Solution
- Step 1: Write the proportion equation
87,862.38 : 121,251.09 = 47,577.06 : x - Step 2: Convert to fraction form
87,862.38/121,251.09 = 47,577.06/x - Step 3: Cross multiply
87,862.38x = 121,251.09 × 47,577.06 - Step 4: Simplify right side
87,862.38x = 5,768,770,384.00 - Step 5: Solve for x
x = 5,768,770,384.00/87,862.38 - Step 6: Final answer
x = 65,656.89
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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.