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Finding the Fourth Proportional to 73,910.34, 110,867.94 and 21,320.28

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Solution

The fourth proportional to 73,910.34, 110,867.94 and 21,320.28 is: 31,981.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,910.34 : 110,867.94 = 21,320.28 : x
  2. Step 2: Convert to fraction form
    73,910.34/110,867.94 = 21,320.28/x
  3. Step 3: Cross multiply
    73,910.34x = 110,867.94 × 21,320.28
  4. Step 4: Simplify right side
    73,910.34x = 2,363,735,523.82
  5. Step 5: Solve for x
    x = 2,363,735,523.82/73,910.34
  6. Step 6: Final answer
    x = 31,981.12

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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.