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Finding the Fourth Proportional to 65,819.73, 98,710.75 and 21,450.36

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Solution

The fourth proportional to 65,819.73, 98,710.75 and 21,450.36 is: 32,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,819.73 : 98,710.75 = 21,450.36 : x
  2. Step 2: Convert to fraction form
    65,819.73/98,710.75 = 21,450.36/x
  3. Step 3: Cross multiply
    65,819.73x = 98,710.75 × 21,450.36
  4. Step 4: Simplify right side
    65,819.73x = 2,117,381,123.37
  5. Step 5: Solve for x
    x = 2,117,381,123.37/65,819.73
  6. Step 6: Final answer
    x = 32,169.40

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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.