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Finding the Fourth Proportional to 74,620.20, 111,930.30 and 73,324.20

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Solution

The fourth proportional to 74,620.20, 111,930.30 and 73,324.20 is: 109,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,620.20 : 111,930.30 = 73,324.20 : x
  2. Step 2: Convert to fraction form
    74,620.20/111,930.30 = 73,324.20/x
  3. Step 3: Cross multiply
    74,620.20x = 111,930.30 × 73,324.20
  4. Step 4: Simplify right side
    74,620.20x = 8,207,199,703.26
  5. Step 5: Solve for x
    x = 8,207,199,703.26/74,620.20
  6. Step 6: Final answer
    x = 109,986.30

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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.