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Finding the Fourth Proportional to 64,808, 96,992.52 and 39,863.88

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Solution

The fourth proportional to 64,808, 96,992.52 and 39,863.88 is: 59,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,808 : 96,992.52 = 39,863.88 : x
  2. Step 2: Convert to fraction form
    64,808/96,992.52 = 39,863.88/x
  3. Step 3: Cross multiply
    64,808x = 96,992.52 × 39,863.88
  4. Step 4: Simplify right side
    64,808x = 3,866,498,178.18
  5. Step 5: Solve for x
    x = 3,866,498,178.18/64,808
  6. Step 6: Final answer
    x = 59,660.82

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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.