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Finding the Fourth Proportional to 74,256, 111,390.48 and 18,852

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Solution

The fourth proportional to 74,256, 111,390.48 and 18,852 is: 28,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,256 : 111,390.48 = 18,852 : x
  2. Step 2: Convert to fraction form
    74,256/111,390.48 = 18,852/x
  3. Step 3: Cross multiply
    74,256x = 111,390.48 × 18,852
  4. Step 4: Simplify right side
    74,256x = 2,099,933,328.96
  5. Step 5: Solve for x
    x = 2,099,933,328.96/74,256
  6. Step 6: Final answer
    x = 28,279.65

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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.