Home / 74,025.20-102,149.16-40,491.20

Finding the Fourth Proportional to 74,025.20, 102,149.16 and 40,491.20

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Solution

The fourth proportional to 74,025.20, 102,149.16 and 40,491.20 is: 55,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,025.20 : 102,149.16 = 40,491.20 : x
  2. Step 2: Convert to fraction form
    74,025.20/102,149.16 = 40,491.20/x
  3. Step 3: Cross multiply
    74,025.20x = 102,149.16 × 40,491.20
  4. Step 4: Simplify right side
    74,025.20x = 4,136,142,067.39
  5. Step 5: Solve for x
    x = 4,136,142,067.39/74,025.20
  6. Step 6: Final answer
    x = 55,874.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.