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Finding the Fourth Proportional to 57,258.73, 79,017.87 and 42,893.11

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Solution

The fourth proportional to 57,258.73, 79,017.87 and 42,893.11 is: 59,193.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,258.73 : 79,017.87 = 42,893.11 : x
  2. Step 2: Convert to fraction form
    57,258.73/79,017.87 = 42,893.11/x
  3. Step 3: Cross multiply
    57,258.73x = 79,017.87 × 42,893.11
  4. Step 4: Simplify right side
    57,258.73x = 3,389,322,189.88
  5. Step 5: Solve for x
    x = 3,389,322,189.88/57,258.73
  6. Step 6: Final answer
    x = 59,193.11

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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.