Home / 74,660.33-111,989.11-18,500.57

Finding the Fourth Proportional to 74,660.33, 111,989.11 and 18,500.57

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Solution

The fourth proportional to 74,660.33, 111,989.11 and 18,500.57 is: 27,750.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.33 : 111,989.11 = 18,500.57 : x
  2. Step 2: Convert to fraction form
    74,660.33/111,989.11 = 18,500.57/x
  3. Step 3: Cross multiply
    74,660.33x = 111,989.11 × 18,500.57
  4. Step 4: Simplify right side
    74,660.33x = 2,071,862,368.79
  5. Step 5: Solve for x
    x = 2,071,862,368.79/74,660.33
  6. Step 6: Final answer
    x = 27,750.51

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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.