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Finding the Fourth Proportional to 81,020.52, 121,478.04 and 33,622.56

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Solution

The fourth proportional to 81,020.52, 121,478.04 and 33,622.56 is: 50,411.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,020.52 : 121,478.04 = 33,622.56 : x
  2. Step 2: Convert to fraction form
    81,020.52/121,478.04 = 33,622.56/x
  3. Step 3: Cross multiply
    81,020.52x = 121,478.04 × 33,622.56
  4. Step 4: Simplify right side
    81,020.52x = 4,084,402,688.58
  5. Step 5: Solve for x
    x = 4,084,402,688.58/81,020.52
  6. Step 6: Final answer
    x = 50,411.95

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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.