Finding the Fourth Proportional to 81,303.60, 121,725.36 and 51,647.88
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Solution
The fourth proportional to 81,303.60, 121,725.36 and 51,647.88 is: 77,325.69
Step by Step Solution
- Step 1: Write the proportion equation
81,303.60 : 121,725.36 = 51,647.88 : x - Step 2: Convert to fraction form
81,303.60/121,725.36 = 51,647.88/x - Step 3: Cross multiply
81,303.60x = 121,725.36 × 51,647.88 - Step 4: Simplify right side
81,303.60x = 6,286,856,786.24 - Step 5: Solve for x
x = 6,286,856,786.24/81,303.60 - Step 6: Final answer
x = 77,325.69
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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.