Finding the Fourth Proportional to 87,901.36, 121,304.47 and 47,615.13
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Solution
The fourth proportional to 87,901.36, 121,304.47 and 47,615.13 is: 65,709.20
Step by Step Solution
- Step 1: Write the proportion equation
87,901.36 : 121,304.47 = 47,615.13 : x - Step 2: Convert to fraction form
87,901.36/121,304.47 = 47,615.13/x - Step 3: Cross multiply
87,901.36x = 121,304.47 × 47,615.13 - Step 4: Simplify right side
87,901.36x = 5,775,927,908.29 - Step 5: Solve for x
x = 5,775,927,908.29/87,901.36 - Step 6: Final answer
x = 65,709.20
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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.