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Finding the Fourth Proportional to 75,618.80, 113,303.38 and 43,939.93

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Solution

The fourth proportional to 75,618.80, 113,303.38 and 43,939.93 is: 65,837.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,618.80 : 113,303.38 = 43,939.93 : x
  2. Step 2: Convert to fraction form
    75,618.80/113,303.38 = 43,939.93/x
  3. Step 3: Cross multiply
    75,618.80x = 113,303.38 × 43,939.93
  4. Step 4: Simplify right side
    75,618.80x = 4,978,542,585.96
  5. Step 5: Solve for x
    x = 4,978,542,585.96/75,618.80
  6. Step 6: Final answer
    x = 65,837.37

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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.