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Finding the Fourth Proportional to 65,943.96, 98,919.96 and 21,575.40

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Solution

The fourth proportional to 65,943.96, 98,919.96 and 21,575.40 is: 32,364.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,943.96 : 98,919.96 = 21,575.40 : x
  2. Step 2: Convert to fraction form
    65,943.96/98,919.96 = 21,575.40/x
  3. Step 3: Cross multiply
    65,943.96x = 98,919.96 × 21,575.40
  4. Step 4: Simplify right side
    65,943.96x = 2,134,237,704.98
  5. Step 5: Solve for x
    x = 2,134,237,704.98/65,943.96
  6. Step 6: Final answer
    x = 32,364.42

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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.