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Finding the Fourth Proportional to 81,798.48, 122,700.45 and 22,629.20

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Solution

The fourth proportional to 81,798.48, 122,700.45 and 22,629.20 is: 33,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798.48 : 122,700.45 = 22,629.20 : x
  2. Step 2: Convert to fraction form
    81,798.48/122,700.45 = 22,629.20/x
  3. Step 3: Cross multiply
    81,798.48x = 122,700.45 × 22,629.20
  4. Step 4: Simplify right side
    81,798.48x = 2,776,612,494.50
  5. Step 5: Solve for x
    x = 2,776,612,494.50/81,798.48
  6. Step 6: Final answer
    x = 33,944.55

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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.