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Finding the Fourth Proportional to 73,272.60, 109,896.60 and 20,669.76

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Solution

The fourth proportional to 73,272.60, 109,896.60 and 20,669.76 is: 31,001.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,272.60 : 109,896.60 = 20,669.76 : x
  2. Step 2: Convert to fraction form
    73,272.60/109,896.60 = 20,669.76/x
  3. Step 3: Cross multiply
    73,272.60x = 109,896.60 × 20,669.76
  4. Step 4: Simplify right side
    73,272.60x = 2,271,536,346.82
  5. Step 5: Solve for x
    x = 2,271,536,346.82/73,272.60
  6. Step 6: Final answer
    x = 31,001.17

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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.