Finding the Fourth Proportional to 87,129.12, 130,693.80 and 57,733.68
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Solution
The fourth proportional to 87,129.12, 130,693.80 and 57,733.68 is: 86,600.60
Step by Step Solution
- Step 1: Write the proportion equation
87,129.12 : 130,693.80 = 57,733.68 : x - Step 2: Convert to fraction form
87,129.12/130,693.80 = 57,733.68/x - Step 3: Cross multiply
87,129.12x = 130,693.80 × 57,733.68 - Step 4: Simplify right side
87,129.12x = 7,545,434,027.18 - Step 5: Solve for x
x = 7,545,434,027.18/87,129.12 - Step 6: Final answer
x = 86,600.60
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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.