Home / 90,644.40-135,966.60-57,256.20

Finding the Fourth Proportional to 90,644.40, 135,966.60 and 57,256.20

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Solution

The fourth proportional to 90,644.40, 135,966.60 and 57,256.20 is: 85,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,644.40 : 135,966.60 = 57,256.20 : x
  2. Step 2: Convert to fraction form
    90,644.40/135,966.60 = 57,256.20/x
  3. Step 3: Cross multiply
    90,644.40x = 135,966.60 × 57,256.20
  4. Step 4: Simplify right side
    90,644.40x = 7,784,930,842.92
  5. Step 5: Solve for x
    x = 7,784,930,842.92/90,644.40
  6. Step 6: Final answer
    x = 85,884.30

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Similar ratio
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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.