Home / 74,442.60-111,667.26-21,138.36

Finding the Fourth Proportional to 74,442.60, 111,667.26 and 21,138.36

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Solution

The fourth proportional to 74,442.60, 111,667.26 and 21,138.36 is: 31,708.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,442.60 : 111,667.26 = 21,138.36 : x
  2. Step 2: Convert to fraction form
    74,442.60/111,667.26 = 21,138.36/x
  3. Step 3: Cross multiply
    74,442.60x = 111,667.26 × 21,138.36
  4. Step 4: Simplify right side
    74,442.60x = 2,360,462,742.09
  5. Step 5: Solve for x
    x = 2,360,462,742.09/74,442.60
  6. Step 6: Final answer
    x = 31,708.49

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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.