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Finding the Fourth Proportional to 73,155.92, 109,733.88 and 20,565.41

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Solution

The fourth proportional to 73,155.92, 109,733.88 and 20,565.41 is: 30,848.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,155.92 : 109,733.88 = 20,565.41 : x
  2. Step 2: Convert to fraction form
    73,155.92/109,733.88 = 20,565.41/x
  3. Step 3: Cross multiply
    73,155.92x = 109,733.88 × 20,565.41
  4. Step 4: Simplify right side
    73,155.92x = 2,256,721,581.59
  5. Step 5: Solve for x
    x = 2,256,721,581.59/73,155.92
  6. Step 6: Final answer
    x = 30,848.11

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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.