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Finding the Fourth Proportional to 171,785.70, 257,685.78 and 47,126.70

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Solution

The fourth proportional to 171,785.70, 257,685.78 and 47,126.70 is: 70,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,785.70 : 257,685.78 = 47,126.70 : x
  2. Step 2: Convert to fraction form
    171,785.70/257,685.78 = 47,126.70/x
  3. Step 3: Cross multiply
    171,785.70x = 257,685.78 × 47,126.70
  4. Step 4: Simplify right side
    171,785.70x = 12,143,880,448.33
  5. Step 5: Solve for x
    x = 12,143,880,448.33/171,785.70
  6. Step 6: Final answer
    x = 70,692.03

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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.