Finding the Fourth Proportional to 76,889.20, 115,497.68 and 72,394.92
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Solution
The fourth proportional to 76,889.20, 115,497.68 and 72,394.92 is: 108,746.68
Step by Step Solution
- Step 1: Write the proportion equation
76,889.20 : 115,497.68 = 72,394.92 : x - Step 2: Convert to fraction form
76,889.20/115,497.68 = 72,394.92/x - Step 3: Cross multiply
76,889.20x = 115,497.68 × 72,394.92 - Step 4: Simplify right side
76,889.20x = 8,361,445,303.79 - Step 5: Solve for x
x = 8,361,445,303.79/76,889.20 - Step 6: Final answer
x = 108,746.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.