Home / 74,013.64-111,021.60-21,423.28

Finding the Fourth Proportional to 74,013.64, 111,021.60 and 21,423.28

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Solution

The fourth proportional to 74,013.64, 111,021.60 and 21,423.28 is: 32,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,013.64 : 111,021.60 = 21,423.28 : x
  2. Step 2: Convert to fraction form
    74,013.64/111,021.60 = 21,423.28/x
  3. Step 3: Cross multiply
    74,013.64x = 111,021.60 × 21,423.28
  4. Step 4: Simplify right side
    74,013.64x = 2,378,446,822.85
  5. Step 5: Solve for x
    x = 2,378,446,822.85/74,013.64
  6. Step 6: Final answer
    x = 32,135.25

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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.