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Finding the Fourth Proportional to 64,764.52, 97,146.64 and 20,395.15

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Solution

The fourth proportional to 64,764.52, 97,146.64 and 20,395.15 is: 30,592.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,764.52 : 97,146.64 = 20,395.15 : x
  2. Step 2: Convert to fraction form
    64,764.52/97,146.64 = 20,395.15/x
  3. Step 3: Cross multiply
    64,764.52x = 97,146.64 × 20,395.15
  4. Step 4: Simplify right side
    64,764.52x = 1,981,320,294.80
  5. Step 5: Solve for x
    x = 1,981,320,294.80/64,764.52
  6. Step 6: Final answer
    x = 30,592.68

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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.