Home / 85,563.20-128,331.68-23,218.88

Finding the Fourth Proportional to 85,563.20, 128,331.68 and 23,218.88

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Solution

The fourth proportional to 85,563.20, 128,331.68 and 23,218.88 is: 34,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,563.20 : 128,331.68 = 23,218.88 : x
  2. Step 2: Convert to fraction form
    85,563.20/128,331.68 = 23,218.88/x
  3. Step 3: Cross multiply
    85,563.20x = 128,331.68 × 23,218.88
  4. Step 4: Simplify right side
    85,563.20x = 2,979,717,878.12
  5. Step 5: Solve for x
    x = 2,979,717,878.12/85,563.20
  6. Step 6: Final answer
    x = 34,824.76

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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.