Finding the Fourth Proportional to 90,660.72, 125,059.68 and 56,610.09
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Solution
The fourth proportional to 90,660.72, 125,059.68 and 56,610.09 is: 78,089.38
Step by Step Solution
- Step 1: Write the proportion equation
90,660.72 : 125,059.68 = 56,610.09 : x - Step 2: Convert to fraction form
90,660.72/125,059.68 = 56,610.09/x - Step 3: Cross multiply
90,660.72x = 125,059.68 × 56,610.09 - Step 4: Simplify right side
90,660.72x = 7,079,639,740.17 - Step 5: Solve for x
x = 7,079,639,740.17/90,660.72 - Step 6: Final answer
x = 78,089.38
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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.