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Finding the Fourth Proportional to 74,149.63, 111,243.42 and 21,559.12

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Solution

The fourth proportional to 74,149.63, 111,243.42 and 21,559.12 is: 32,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,149.63 : 111,243.42 = 21,559.12 : x
  2. Step 2: Convert to fraction form
    74,149.63/111,243.42 = 21,559.12/x
  3. Step 3: Cross multiply
    74,149.63x = 111,243.42 × 21,559.12
  4. Step 4: Simplify right side
    74,149.63x = 2,398,309,962.88
  5. Step 5: Solve for x
    x = 2,398,309,962.88/74,149.63
  6. Step 6: Final answer
    x = 32,344.19

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1.5x scale

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.