Home / 74,171.84-111,256.74-18,012.38

Finding the Fourth Proportional to 74,171.84, 111,256.74 and 18,012.38

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Solution

The fourth proportional to 74,171.84, 111,256.74 and 18,012.38 is: 27,018.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,171.84 : 111,256.74 = 18,012.38 : x
  2. Step 2: Convert to fraction form
    74,171.84/111,256.74 = 18,012.38/x
  3. Step 3: Cross multiply
    74,171.84x = 111,256.74 × 18,012.38
  4. Step 4: Simplify right side
    74,171.84x = 2,003,998,122.16
  5. Step 5: Solve for x
    x = 2,003,998,122.16/74,171.84
  6. Step 6: Final answer
    x = 27,018.32

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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.