Home / 74,401.23-102,644.75-42,128.44

Finding the Fourth Proportional to 74,401.23, 102,644.75 and 42,128.44

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Solution

The fourth proportional to 74,401.23, 102,644.75 and 42,128.44 is: 58,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,401.23 : 102,644.75 = 42,128.44 : x
  2. Step 2: Convert to fraction form
    74,401.23/102,644.75 = 42,128.44/x
  3. Step 3: Cross multiply
    74,401.23x = 102,644.75 × 42,128.44
  4. Step 4: Simplify right side
    74,401.23x = 4,324,263,040.40
  5. Step 5: Solve for x
    x = 4,324,263,040.40/74,401.23
  6. Step 6: Final answer
    x = 58,120.85

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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.