Finding the Fourth Proportional to 87,881.36, 121,276.64 and 47,595.60
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Solution
The fourth proportional to 87,881.36, 121,276.64 and 47,595.60 is: 65,682.12
Step by Step Solution
- Step 1: Write the proportion equation
87,881.36 : 121,276.64 = 47,595.60 : x - Step 2: Convert to fraction form
87,881.36/121,276.64 = 47,595.60/x - Step 3: Cross multiply
87,881.36x = 121,276.64 × 47,595.60 - Step 4: Simplify right side
87,881.36x = 5,772,234,446.78 - Step 5: Solve for x
x = 5,772,234,446.78/87,881.36 - Step 6: Final answer
x = 65,682.12
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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.