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Finding the Fourth Proportional to 74,435.60, 111,480.60 and 72,707.60

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Solution

The fourth proportional to 74,435.60, 111,480.60 and 72,707.60 is: 108,892.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,435.60 : 111,480.60 = 72,707.60 : x
  2. Step 2: Convert to fraction form
    74,435.60/111,480.60 = 72,707.60/x
  3. Step 3: Cross multiply
    74,435.60x = 111,480.60 × 72,707.60
  4. Step 4: Simplify right side
    74,435.60x = 8,105,486,872.56
  5. Step 5: Solve for x
    x = 8,105,486,872.56/74,435.60
  6. Step 6: Final answer
    x = 108,892.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.