Home / 90,453.78-124,820-50,163.76

Finding the Fourth Proportional to 90,453.78, 124,820 and 50,163.76

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Solution

The fourth proportional to 90,453.78, 124,820 and 50,163.76 is: 69,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,453.78 : 124,820 = 50,163.76 : x
  2. Step 2: Convert to fraction form
    90,453.78/124,820 = 50,163.76/x
  3. Step 3: Cross multiply
    90,453.78x = 124,820 × 50,163.76
  4. Step 4: Simplify right side
    90,453.78x = 6,261,440,523.20
  5. Step 5: Solve for x
    x = 6,261,440,523.20/90,453.78
  6. Step 6: Final answer
    x = 69,222.54

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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.