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Finding the Fourth Proportional to 65,849.60, 98,780.88 and 21,474.56

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Solution

The fourth proportional to 65,849.60, 98,780.88 and 21,474.56 is: 32,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,849.60 : 98,780.88 = 21,474.56 : x
  2. Step 2: Convert to fraction form
    65,849.60/98,780.88 = 21,474.56/x
  3. Step 3: Cross multiply
    65,849.60x = 98,780.88 × 21,474.56
  4. Step 4: Simplify right side
    65,849.60x = 2,121,275,934.41
  5. Step 5: Solve for x
    x = 2,121,275,934.41/65,849.60
  6. Step 6: Final answer
    x = 32,213.95

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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.