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Finding the Fourth Proportional to 73,270.90, 109,942.80 and 28,899.10

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Solution

The fourth proportional to 73,270.90, 109,942.80 and 28,899.10 is: 43,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,270.90 : 109,942.80 = 28,899.10 : x
  2. Step 2: Convert to fraction form
    73,270.90/109,942.80 = 28,899.10/x
  3. Step 3: Cross multiply
    73,270.90x = 109,942.80 × 28,899.10
  4. Step 4: Simplify right side
    73,270.90x = 3,177,247,971.48
  5. Step 5: Solve for x
    x = 3,177,247,971.48/73,270.90
  6. Step 6: Final answer
    x = 43,363.03

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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.