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Finding the Fourth Proportional to 81,073.10, 121,610.06 and 36,647.84

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Solution

The fourth proportional to 81,073.10, 121,610.06 and 36,647.84 is: 54,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073.10 : 121,610.06 = 36,647.84 : x
  2. Step 2: Convert to fraction form
    81,073.10/121,610.06 = 36,647.84/x
  3. Step 3: Cross multiply
    81,073.10x = 121,610.06 × 36,647.84
  4. Step 4: Simplify right side
    81,073.10x = 4,456,746,021.27
  5. Step 5: Solve for x
    x = 4,456,746,021.27/81,073.10
  6. Step 6: Final answer
    x = 54,971.95

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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.