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Finding the Fourth Proportional to 85,121.77, 127,593.95 and 47,626.87

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Solution

The fourth proportional to 85,121.77, 127,593.95 and 47,626.87 is: 71,390.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,121.77 : 127,593.95 = 47,626.87 : x
  2. Step 2: Convert to fraction form
    85,121.77/127,593.95 = 47,626.87/x
  3. Step 3: Cross multiply
    85,121.77x = 127,593.95 × 47,626.87
  4. Step 4: Simplify right side
    85,121.77x = 6,076,900,469.44
  5. Step 5: Solve for x
    x = 6,076,900,469.44/85,121.77
  6. Step 6: Final answer
    x = 71,390.67

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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.