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Finding the Fourth Proportional to 86,693.78, 130,028.88 and 23,517.96

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Solution

The fourth proportional to 86,693.78, 130,028.88 and 23,517.96 is: 35,273.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,693.78 : 130,028.88 = 23,517.96 : x
  2. Step 2: Convert to fraction form
    86,693.78/130,028.88 = 23,517.96/x
  3. Step 3: Cross multiply
    86,693.78x = 130,028.88 × 23,517.96
  4. Step 4: Simplify right side
    86,693.78x = 3,058,013,998.68
  5. Step 5: Solve for x
    x = 3,058,013,998.68/86,693.78
  6. Step 6: Final answer
    x = 35,273.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.