Home / 74,015.38-111,034-21,418.03

Finding the Fourth Proportional to 74,015.38, 111,034 and 21,418.03

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Solution

The fourth proportional to 74,015.38, 111,034 and 21,418.03 is: 32,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,015.38 : 111,034 = 21,418.03 : x
  2. Step 2: Convert to fraction form
    74,015.38/111,034 = 21,418.03/x
  3. Step 3: Cross multiply
    74,015.38x = 111,034 × 21,418.03
  4. Step 4: Simplify right side
    74,015.38x = 2,378,129,543.02
  5. Step 5: Solve for x
    x = 2,378,129,543.02/74,015.38
  6. Step 6: Final answer
    x = 32,130.21

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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.