Finding the Fourth Proportional to 76,660.08, 114,972.84 and 21,260.40
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Solution
The fourth proportional to 76,660.08, 114,972.84 and 21,260.40 is: 31,885.81
Step by Step Solution
- Step 1: Write the proportion equation
76,660.08 : 114,972.84 = 21,260.40 : x - Step 2: Convert to fraction form
76,660.08/114,972.84 = 21,260.40/x - Step 3: Cross multiply
76,660.08x = 114,972.84 × 21,260.40 - Step 4: Simplify right side
76,660.08x = 2,444,368,567.54 - Step 5: Solve for x
x = 2,444,368,567.54/76,660.08 - Step 6: Final answer
x = 31,885.81
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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.