Home / 85,257.54-127,896.20-28,336.55

Finding the Fourth Proportional to 85,257.54, 127,896.20 and 28,336.55

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Solution

The fourth proportional to 85,257.54, 127,896.20 and 28,336.55 is: 42,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,257.54 : 127,896.20 = 28,336.55 : x
  2. Step 2: Convert to fraction form
    85,257.54/127,896.20 = 28,336.55/x
  3. Step 3: Cross multiply
    85,257.54x = 127,896.20 × 28,336.55
  4. Step 4: Simplify right side
    85,257.54x = 3,624,136,391.21
  5. Step 5: Solve for x
    x = 3,624,136,391.21/85,257.54
  6. Step 6: Final answer
    x = 42,508.10

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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.