Home / 40,519.12-55,939.80-30,883.36

Finding the Fourth Proportional to 40,519.12, 55,939.80 and 30,883.36

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Solution

The fourth proportional to 40,519.12, 55,939.80 and 30,883.36 is: 42,636.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,519.12 : 55,939.80 = 30,883.36 : x
  2. Step 2: Convert to fraction form
    40,519.12/55,939.80 = 30,883.36/x
  3. Step 3: Cross multiply
    40,519.12x = 55,939.80 × 30,883.36
  4. Step 4: Simplify right side
    40,519.12x = 1,727,608,981.73
  5. Step 5: Solve for x
    x = 1,727,608,981.73/40,519.12
  6. Step 6: Final answer
    x = 42,636.88

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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.