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Finding the Fourth Proportional to 51,295.40, 76,991.70 and 43,908.20

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Solution

The fourth proportional to 51,295.40, 76,991.70 and 43,908.20 is: 65,903.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,295.40 : 76,991.70 = 43,908.20 : x
  2. Step 2: Convert to fraction form
    51,295.40/76,991.70 = 43,908.20/x
  3. Step 3: Cross multiply
    51,295.40x = 76,991.70 × 43,908.20
  4. Step 4: Simplify right side
    51,295.40x = 3,380,566,961.94
  5. Step 5: Solve for x
    x = 3,380,566,961.94/51,295.40
  6. Step 6: Final answer
    x = 65,903.90

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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.