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Finding the Fourth Proportional to 51,996.71, 78,004.79 and 20,834.39

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Solution

The fourth proportional to 51,996.71, 78,004.79 and 20,834.39 is: 31,255.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,996.71 : 78,004.79 = 20,834.39 : x
  2. Step 2: Convert to fraction form
    51,996.71/78,004.79 = 20,834.39/x
  3. Step 3: Cross multiply
    51,996.71x = 78,004.79 × 20,834.39
  4. Step 4: Simplify right side
    51,996.71x = 1,625,182,216.73
  5. Step 5: Solve for x
    x = 1,625,182,216.73/51,996.71
  6. Step 6: Final answer
    x = 31,255.48

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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.