Home / 90,028.88-134,760.21-61,783.78

Finding the Fourth Proportional to 90,028.88, 134,760.21 and 61,783.78

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Solution

The fourth proportional to 90,028.88, 134,760.21 and 61,783.78 is: 92,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,028.88 : 134,760.21 = 61,783.78 : x
  2. Step 2: Convert to fraction form
    90,028.88/134,760.21 = 61,783.78/x
  3. Step 3: Cross multiply
    90,028.88x = 134,760.21 × 61,783.78
  4. Step 4: Simplify right side
    90,028.88x = 8,325,994,282.96
  5. Step 5: Solve for x
    x = 8,325,994,282.96/90,028.88
  6. Step 6: Final answer
    x = 92,481.37

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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.