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Finding the Fourth Proportional to 65,504.77, 90,391.60 and 36,819.87

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Solution

The fourth proportional to 65,504.77, 90,391.60 and 36,819.87 is: 50,808.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,504.77 : 90,391.60 = 36,819.87 : x
  2. Step 2: Convert to fraction form
    65,504.77/90,391.60 = 36,819.87/x
  3. Step 3: Cross multiply
    65,504.77x = 90,391.60 × 36,819.87
  4. Step 4: Simplify right side
    65,504.77x = 3,328,206,869.04
  5. Step 5: Solve for x
    x = 3,328,206,869.04/65,504.77
  6. Step 6: Final answer
    x = 50,808.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.