Home / 74,128.38-102,297.38-40,137.27

Finding the Fourth Proportional to 74,128.38, 102,297.38 and 40,137.27

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Solution

The fourth proportional to 74,128.38, 102,297.38 and 40,137.27 is: 55,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,128.38 : 102,297.38 = 40,137.27 : x
  2. Step 2: Convert to fraction form
    74,128.38/102,297.38 = 40,137.27/x
  3. Step 3: Cross multiply
    74,128.38x = 102,297.38 × 40,137.27
  4. Step 4: Simplify right side
    74,128.38x = 4,105,937,360.67
  5. Step 5: Solve for x
    x = 4,105,937,360.67/74,128.38
  6. Step 6: Final answer
    x = 55,389.55

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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.