Home / 74,660.32-111,989.06-18,500.54

Finding the Fourth Proportional to 74,660.32, 111,989.06 and 18,500.54

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Solution

The fourth proportional to 74,660.32, 111,989.06 and 18,500.54 is: 27,750.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.32 : 111,989.06 = 18,500.54 : x
  2. Step 2: Convert to fraction form
    74,660.32/111,989.06 = 18,500.54/x
  3. Step 3: Cross multiply
    74,660.32x = 111,989.06 × 18,500.54
  4. Step 4: Simplify right side
    74,660.32x = 2,071,857,991.59
  5. Step 5: Solve for x
    x = 2,071,857,991.59/74,660.32
  6. Step 6: Final answer
    x = 27,750.46

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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.