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Finding the Fourth Proportional to 81,397.58, 122,099.62 and 25,243.52

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Solution

The fourth proportional to 81,397.58, 122,099.62 and 25,243.52 is: 37,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.58 : 122,099.62 = 25,243.52 : x
  2. Step 2: Convert to fraction form
    81,397.58/122,099.62 = 25,243.52/x
  3. Step 3: Cross multiply
    81,397.58x = 122,099.62 × 25,243.52
  4. Step 4: Simplify right side
    81,397.58x = 3,082,224,199.46
  5. Step 5: Solve for x
    x = 3,082,224,199.46/81,397.58
  6. Step 6: Final answer
    x = 37,866.29

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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.