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Finding the Fourth Proportional to 57,930.60, 81,277.80 and 57,930.60

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Solution

The fourth proportional to 57,930.60, 81,277.80 and 57,930.60 is: 81,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,930.60 : 81,277.80 = 57,930.60 : x
  2. Step 2: Convert to fraction form
    57,930.60/81,277.80 = 57,930.60/x
  3. Step 3: Cross multiply
    57,930.60x = 81,277.80 × 57,930.60
  4. Step 4: Simplify right side
    57,930.60x = 4,708,471,720.68
  5. Step 5: Solve for x
    x = 4,708,471,720.68/57,930.60
  6. Step 6: Final answer
    x = 81,277.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.