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Finding the Fourth Proportional to 74,358.54, 111,538.53 and 18,954.54

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Solution

The fourth proportional to 74,358.54, 111,538.53 and 18,954.54 is: 28,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,358.54 : 111,538.53 = 18,954.54 : x
  2. Step 2: Convert to fraction form
    74,358.54/111,538.53 = 18,954.54/x
  3. Step 3: Cross multiply
    74,358.54x = 111,538.53 × 18,954.54
  4. Step 4: Simplify right side
    74,358.54x = 2,114,161,528.43
  5. Step 5: Solve for x
    x = 2,114,161,528.43/74,358.54
  6. Step 6: Final answer
    x = 28,431.99

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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.