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Finding the Fourth Proportional to 81,909.92, 122,864.93 and 22,745.59

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Solution

The fourth proportional to 81,909.92, 122,864.93 and 22,745.59 is: 34,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,909.92 : 122,864.93 = 22,745.59 : x
  2. Step 2: Convert to fraction form
    81,909.92/122,864.93 = 22,745.59/x
  3. Step 3: Cross multiply
    81,909.92x = 122,864.93 × 22,745.59
  4. Step 4: Simplify right side
    81,909.92x = 2,794,635,614.71
  5. Step 5: Solve for x
    x = 2,794,635,614.71/81,909.92
  6. Step 6: Final answer
    x = 34,118.40

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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.