Home / 81,280.39-121,972.43-34,533.27

Finding the Fourth Proportional to 81,280.39, 121,972.43 and 34,533.27

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Solution

The fourth proportional to 81,280.39, 121,972.43 and 34,533.27 is: 51,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280.39 : 121,972.43 = 34,533.27 : x
  2. Step 2: Convert to fraction form
    81,280.39/121,972.43 = 34,533.27/x
  3. Step 3: Cross multiply
    81,280.39x = 121,972.43 × 34,533.27
  4. Step 4: Simplify right side
    81,280.39x = 4,212,106,857.75
  5. Step 5: Solve for x
    x = 4,212,106,857.75/81,280.39
  6. Step 6: Final answer
    x = 51,821.93

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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.