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Finding the Fourth Proportional to 74,480.30, 111,698.85 and 30,092.30

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Solution

The fourth proportional to 74,480.30, 111,698.85 and 30,092.30 is: 45,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,480.30 : 111,698.85 = 30,092.30 : x
  2. Step 2: Convert to fraction form
    74,480.30/111,698.85 = 30,092.30/x
  3. Step 3: Cross multiply
    74,480.30x = 111,698.85 × 30,092.30
  4. Step 4: Simplify right side
    74,480.30x = 3,361,275,303.86
  5. Step 5: Solve for x
    x = 3,361,275,303.86/74,480.30
  6. Step 6: Final answer
    x = 45,129.72

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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.