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Finding the Fourth Proportional to 81,483.30, 122,237.10 and 28,888.38

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Solution

The fourth proportional to 81,483.30, 122,237.10 and 28,888.38 is: 43,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483.30 : 122,237.10 = 28,888.38 : x
  2. Step 2: Convert to fraction form
    81,483.30/122,237.10 = 28,888.38/x
  3. Step 3: Cross multiply
    81,483.30x = 122,237.10 × 28,888.38
  4. Step 4: Simplify right side
    81,483.30x = 3,531,231,794.90
  5. Step 5: Solve for x
    x = 3,531,231,794.90/81,483.30
  6. Step 6: Final answer
    x = 43,336.88

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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.