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Finding the Fourth Proportional to 73,158.90, 109,742.37 and 20,564.22

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Solution

The fourth proportional to 73,158.90, 109,742.37 and 20,564.22 is: 30,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,158.90 : 109,742.37 = 20,564.22 : x
  2. Step 2: Convert to fraction form
    73,158.90/109,742.37 = 20,564.22/x
  3. Step 3: Cross multiply
    73,158.90x = 109,742.37 × 20,564.22
  4. Step 4: Simplify right side
    73,158.90x = 2,256,766,240.00
  5. Step 5: Solve for x
    x = 2,256,766,240.00/73,158.90
  6. Step 6: Final answer
    x = 30,847.46

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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.