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Finding the Fourth Proportional to 70,809.52, 106,177.71 and 20,883.27

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Solution

The fourth proportional to 70,809.52, 106,177.71 and 20,883.27 is: 31,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,809.52 : 106,177.71 = 20,883.27 : x
  2. Step 2: Convert to fraction form
    70,809.52/106,177.71 = 20,883.27/x
  3. Step 3: Cross multiply
    70,809.52x = 106,177.71 × 20,883.27
  4. Step 4: Simplify right side
    70,809.52x = 2,217,337,785.91
  5. Step 5: Solve for x
    x = 2,217,337,785.91/70,809.52
  6. Step 6: Final answer
    x = 31,314.12

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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.