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Finding the Fourth Proportional to 78,885.60, 108,800.40 and 50,593.92

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Solution

The fourth proportional to 78,885.60, 108,800.40 and 50,593.92 is: 69,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,885.60 : 108,800.40 = 50,593.92 : x
  2. Step 2: Convert to fraction form
    78,885.60/108,800.40 = 50,593.92/x
  3. Step 3: Cross multiply
    78,885.60x = 108,800.40 × 50,593.92
  4. Step 4: Simplify right side
    78,885.60x = 5,504,638,733.57
  5. Step 5: Solve for x
    x = 5,504,638,733.57/78,885.60
  6. Step 6: Final answer
    x = 69,780.02

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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.