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Finding the Fourth Proportional to 74,449.76, 111,580.71 and 30,051.80

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Solution

The fourth proportional to 74,449.76, 111,580.71 and 30,051.80 is: 45,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,449.76 : 111,580.71 = 30,051.80 : x
  2. Step 2: Convert to fraction form
    74,449.76/111,580.71 = 30,051.80/x
  3. Step 3: Cross multiply
    74,449.76x = 111,580.71 × 30,051.80
  4. Step 4: Simplify right side
    74,449.76x = 3,353,201,180.78
  5. Step 5: Solve for x
    x = 3,353,201,180.78/74,449.76
  6. Step 6: Final answer
    x = 45,039.78

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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.