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Finding the Fourth Proportional to 115,865, 159,893.70 and 62,873

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Solution

The fourth proportional to 115,865, 159,893.70 and 62,873 is: 86,764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,865 : 159,893.70 = 62,873 : x
  2. Step 2: Convert to fraction form
    115,865/159,893.70 = 62,873/x
  3. Step 3: Cross multiply
    115,865x = 159,893.70 × 62,873
  4. Step 4: Simplify right side
    115,865x = 10,052,996,600.10
  5. Step 5: Solve for x
    x = 10,052,996,600.10/115,865
  6. Step 6: Final answer
    x = 86,764.74

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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.