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Finding the Fourth Proportional to 65,958.17, 98,951.12 and 21,581.47

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Solution

The fourth proportional to 65,958.17, 98,951.12 and 21,581.47 is: 32,376.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,958.17 : 98,951.12 = 21,581.47 : x
  2. Step 2: Convert to fraction form
    65,958.17/98,951.12 = 21,581.47/x
  3. Step 3: Cross multiply
    65,958.17x = 98,951.12 × 21,581.47
  4. Step 4: Simplify right side
    65,958.17x = 2,135,510,025.08
  5. Step 5: Solve for x
    x = 2,135,510,025.08/65,958.17
  6. Step 6: Final answer
    x = 32,376.73

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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.