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Finding the Fourth Proportional to 64,919.49, 97,391.53 and 20,542.52

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Solution

The fourth proportional to 64,919.49, 97,391.53 and 20,542.52 is: 30,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,919.49 : 97,391.53 = 20,542.52 : x
  2. Step 2: Convert to fraction form
    64,919.49/97,391.53 = 20,542.52/x
  3. Step 3: Cross multiply
    64,919.49x = 97,391.53 × 20,542.52
  4. Step 4: Simplify right side
    64,919.49x = 2,000,667,722.01
  5. Step 5: Solve for x
    x = 2,000,667,722.01/64,919.49
  6. Step 6: Final answer
    x = 30,817.68

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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.